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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level

PHYSICS 9702/12

Paper 1 Multiple Choice October/November 2009

1 hour

Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended)

READ THESE INSTRUCTIONS FIRST

Write in soft pencil.

Do not use staples, paper clips, highlighters, glue or correction fluid.

Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you.

There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D.

Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet.

Read the instructions on the Answer Sheet very carefully.

Each correct answer will score one mark. A mark will not be deducted for a wrong answer.

Any working should be done in this booklet.

2

© UCLES 2009 9702/12/O/N/09

Data

speed of light in free space, c = 3.00 × 108 m s–1

permeability of free space, µ0 = 4π × 10–7

H m–1

permittivity of free space, ε0 = 8.85 × 10–12

F m–1

elementary charge, e = 1.60 × 10–19 C

the Planck constant, h = 6.63 × 10–34 J s

unified atomic mass constant, u = 1.66 × 10–27 kg

rest mass of electron, me = 9.11 × 10–31 kg

rest mass of proton, mp = 1.67 × 10–27 kg

molar gas constant, R = 8.31 J K–1 mol–1

the Avogadro constant, NA = 6.02 × 1023 mol–1

the Boltzmann constant, k = 1.38 × 10–23 J K–1

gravitational constant, G = 6.67 × 10–11 N m2

kg–2

acceleration of free fall, g = 9.81 m s–2

3

© UCLES 2009 9702/12/O/N/09 [Turn over

Formulae

uniformly accelerated motion, s = ut + 2

2

1at

v2 = u2 + 2as

work done on/by a gas, W = p∆V

gravitational potential, φ = –

r

Gm

hydrostatic pressure, p = ρgh

pressure of an ideal gas, p = V

Nm3

1 <c

2>

simple harmonic motion, a = – ω

2x

velocity of particle in s.h.m., v = v0 cos ωt

v = ± ω 22

0xx −

electric potential, V = r

Q

04 επ

capacitors in series, 1 / C = 1 / C1 + 1 / C2 + . . .

capacitors in parallel, C = C1 + C2 + . . .

energy of charged capacitor, W = QV2

1

resistors in series, R = R1 + R2 + . . .

resistors in parallel, 1 / R = 1 / R1 + 1 / R2 + . . .

alternating current/voltage, x = x0 sin ωt

radioactive decay, x = x0 exp(–λt)

decay constant, λ =

2

1

0.693

t

4

© UCLES 2009 9702/12/O/N/09

1 The drag force F acting on a moving sphere obeys an equation of the form F = kAv

2, where A represents the sphere’s frontal area and v represents its speed.

What are the base units of the constant k ?

A kg m5 s–4 B kg m–2

s–1 C kg m–3 D kg m–4 s2

2 The graph shows two current-voltage calibration curves for a solar cell exposed to different light

intensities.

3.0

2.0

1.0

00 0.1 0.2 0.3 0.4 0.5 0.6

voltage / V

current / A

intensity = 1000 W m–2

intensity = 100 W m–2

At zero voltage, what is the ratio 2_

2_

mW100 at current

mW1000 at current?

A 1.1 B 4.7 C 8.0 D 10 Space for working

5


3 The diagram shows an oscilloscope screen displaying two signals.

X

Y

Signal X has a frequency of 50 Hz and peak voltage of 12 V. What is the period and peak voltage of signal Y?

period / ms peak voltage

/ V

A 20 4

B 20 12

C 50 4

D 50 12

4 On a particular railway, a train driver applies the brake of the train at a yellow signal, a distance of

1.0 km from a red signal, where it stops.

The maximum deceleration of the train is 0.2 m s–2.

Assuming uniform deceleration, what is the maximum safe speed of the train at the yellow signal?

A 20 m s–1 B 40 m s–1 C 200 m s–1 D 400 m s–1 Space for working

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© UCLES 2009 9702/12/O/N/09

5 A ball is released from rest above a horizontal surface and bounces several times.

The graph shows how, for this ball, a quantity y varies with time.

00 time

y

What is the quantity y ?

A acceleration

B displacement

C kinetic energy

D velocity Space for working

7


6 The diagram shows a velocity-time graph.

12

9

6

3

00 1 2 3 4

velocity / m s–1

time / s

What is the displacement during the last 2 seconds of the motion?

A 6 m B 12 m C 18 m D 24 m 7 Which statement about a ball that strikes a tennis racket and rebounds is always correct?

A Total kinetic energy of the ball is conserved.

B Total kinetic energy of the system is conserved.

C Total momentum of the ball is conserved.

D Total momentum of the system is conserved. Space for working

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8 The diagram shows two spherical masses approaching each other head-on at an equal speed u. One has mass 2m and the other has mass m.

2m

u

m

u

Which diagram, showing the situation after the collision, shows the result of an elastic collision?

2mu

35u

3

u6

2u

3

u6

2u

3

u

3

m

A

2m

the spheres stick together

m

B

2m m

C

2m m

D

9 A supermarket trolley, total mass 30 kg, is moving at 3.0 m s–1. A retarding force of 60 N is applied

to the trolley for 0.50 s in the opposite direction to the trolley’s initial velocity.

What is the trolley’s new velocity after the application of the force?

A 1.0 m s–1 B 1.5 m s–1 C 2.0 m s–1 D 2.8 m s–1 Space for working

9


10 What is the centre of gravity of an object?

A the geometrical centre of the object

B the point about which the total torque is zero

C the point at which the weight of the object may be considered to act

D the point through which gravity acts 11 The diagrams show two ways of hanging the same picture.

T1 T1

R1

diagram 1

T2 T2

R2

diagram 2

nail

nail

In both cases, a string is attached to the same points on the picture and looped symmetrically over a nail in a wall. The forces shown are those that act on the nail.

In diagram 1, the string loop is shorter than in diagram 2.

Which information about the magnitude of the forces is correct?

A R1 = R2 T1 = T2

B R1 = R2 T1 > T2

C R1 > R2 T1 < T2

D R1 < R2 T1 = T2 Space for working

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© UCLES 2009 9702/12/O/N/09

12 The diagram shows two pulley wheels connected by a belt.

PQ

Wheel Q is driven by a motor and rotates clockwise at a constant rate. Wheel Q puts tension in the top portion of the belt, which in turn drives the wheel P. The lower portion of the belt is slack and has no tension. The weight of the belt and frictional forces are negligible.

The diameter of P is 150 mm. The diameter of Q is 100 mm. The torque applied to Q is 3.0 N m.

What is the tension in the belt and the torque on wheel P?

tension in top of belt

/ N torque on wheel P

/ N m

A 20 2.0

B 30 4.5

C 40 2.0

D 60 4.5

13 A projectile is launched at 45° to the horizontal with initial kinetic energy E.

Assuming air resistance to be negligible, what will be the kinetic energy of the projectile when it reaches its highest point?

A 0.50 E B 0.71 E C 0.87 E D E Space for working

11


14 Two trolleys are placed together on a horizontal runway with a compressed spring between them.

1 kg2 kg

When they are released, the 2 kg trolley moves to the left at 2 m s–1.

How much energy was stored in the spring?

A 4 J B 6 J C 8 J D 12 J 15 An electric railway locomotive has a maximum mechanical output power of 4.0 MW. Electrical

power is delivered at 25 kV from overhead wires. The overall efficiency of the locomotive in converting electrical power to mechanical power is 80 %.

What is the current from the overhead wires when the locomotive is operating at its maximum power?

A 130 A B 160 A C 200 A D 250 A Space for working

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16 The diagram shows an ice cube floating in water.

ice

Both the ice cube and the water are at 0 °C.

Which statement correctly compares the molecular properties of the ice and those of the water?

A The mean inter-molecular potential energies are the same for both the ice molecules and the water molecules.

B The mean inter-molecular separations are the same for both the ice and the water.

C The mean kinetic energies are the same for both the ice molecules and the water molecules.

D The mean total energies are the same for both the ice molecules and the water molecules. Space for working

13


17 In the kinetic model of gases, what is pressure equal to?

A the number of atoms hitting and rebounding from a surface of the gas container

B the number of atoms hitting and rebounding from a unit area of the gas container surface

C the force exerted by the atoms hitting and rebounding from a surface of the gas container

D the force exerted by the atoms hitting and rebounding from a unit area of the gas container surface

18 A rectangular metal bar exerts a pressure of 15 200 Pa on the horizontal surface on which it rests.

If the height of the metal bar is 80 cm, what is the density of the metal?

A 190 kg m–3

B 1900 kg m–3

C 19 000 kg m–3

D 190 000 kg m–3 19 Which row best defines elastic and plastic behaviour of a material?

elastic behaviour of a material plastic behaviour of a material

A extends only within the limit of proportionality extends beyond the limit of proportionality

B has a linear force-extension curve has a horizontal force-extension curve

C obeys Hooke’s Law extends continuously under a steady load

D returns to its original shape and size suffers permanent deformation

Space for working

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© UCLES 2009 9702/12/O/N/09

20 The graph shows the non-linear force-extension curve for a wire made from a new composite material.

100

00 1.0 2.0

x / mm

F / N

P

What could be the value of the strain energy stored in the wire when it is stretched to point P?

A 0.09 J B 0.10 J C 0.11 J D 0.20 J 21 A steel string on an electric guitar has the following properties.

diameter = 5.0 × 10–4 m

Young modulus = 2.0 × 1011 Pa

tension = 20 N

The string snaps, and contracts elastically.

By what percentage does a length l of a piece of the string contract?

A 5.1 × 10–4 % B 5.1 × 10–2

% C 1.3 × 10–4 % D 1.3 × 10–2

% Space for working

15


22 The order of magnitude of the frequency of the longest-wavelength ultraviolet waves can be expressed as 10x

Hz.

What is the value of x?

A 13 B 15 C 17 D 19 23 The light from two lasers passes through a vacuum. One laser emits red light and the other emits

green light.

Which property of the two laser beams must be different?

A amplitude

B frequency

C plane of polarisation

D speed 24 The diagram shows a standing wave on a string. The standing wave has three nodes N1, N2 and

N3.

N1 N2 N3

Which statement is correct?

A All points on the string vibrate in phase.

B All points on the string vibrate with the same amplitude.

C Points equidistant from N2 vibrate with the same frequency and in phase.

D Points equidistant from N2 vibrate with the same frequency and the same amplitude. 25 A parallel beam of light of wavelength 450 nm falls normally on a diffraction grating which has

300 lines / mm.

What is the total number of transmitted maxima?

A 7 B 8 C 14 D 15 Space for working

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© UCLES 2009 9702/12/O/N/09

26 A small charge q is placed in the electric field of a large charge Q.

Both charges experience a force F.

What is the electric field strength of the charge Q at the position of the charge q?

A Qq

F B

Q

F C FqQ D

qF

27 The diagram shows two parallel horizontal metal plates held at a potential difference V.

+V

A small charged liquid drop, midway between the plates, is held in equilibrium by the combination of its weight and the electric force acting on it.

The acceleration of free fall is g and the electric field strength is E.

What is the ratio of the charge to mass of the drop, and the polarity of the charge on the drop?

mass

charge polarity

A E

g positive

B E

g negative

C g

E positive

D gE

negative

Space for working

17


28 The electric field at a certain distance from an isolated alpha particle is 3.0 × 107 N C–1.

What is the force on an electron when at that distance from the alpha particle?

A 4.8 × 10–12 N

B 9.6 × 10–12 N

C 3.0 × 107 N

D 6.0 × 107 N

29 A cell is connected to a resistor.

At any given moment, the potential difference across the cell is less than its electromotive force.

Which statement explains this?

A The cell is continually discharging.

B The connecting wire has some resistance.

C Energy is needed to drive charge through the cell.

D Power is used when there is a current in the resistor. Space for working

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© UCLES 2009 9702/12/O/N/09

30 Which values of current and resistance will produce a rate of energy transfer of 16 J s–1?

current / A resistance / Ω

A 1 4

B 2 8

C 4 1

D 16 1

31 A cylindrical wire 4.0 m long has a resistance of 31 Ω and is made of metal of resistivity

1.0 × 10–6 Ω m.

What is the radius of cross-section of the wire?

A 1.0 × 10–8 m

B 2.0 × 10–8 m

C 6.4 × 10–8 m

D 2.0 × 10–4 m

Space for working

19


32 Each of Kirchhoff's two laws presumes that some quantity is conserved.

Which row states Kirchhoff's first law and names the quantity that is conserved?

statement quantity

A

the algebraic sum of currents into a junction is zero

charge

B

the algebraic sum of currents into a junction is zero

energy

C

the e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop

charge

D

the e.m.f. in a loop is equal to the algebraic sum of the product of current and resistance round the loop

energy

33 The diagram shows the symbol for a wire carrying a current I.

X YI

What does this current represent?

A the amount of charge flowing past a point in XY per second

B the number of electrons flowing past a point in XY per second

C the number of positive ions flowing past a point in XY per second

D the number of protons flowing past a point in XY per second Space for working

20

© UCLES 2009 9702/12/O/N/09

34 A potential divider consisting of resistors of resistance R1 and R2 is connected to an input potential difference of V0 and gives an output p.d. of V.

R1 V

R2

V0

What is the value of V ?

A 2

10

R

RV B

21

10

RR

RV

+

C 21

20

RR

RV

+

D 1

210)(

R

RRV +

35 A network of resistors consists of two 3.0 Ω resistors and three 6.0 Ω resistors.

3.0 Ω6.0 Ω

3.0 Ω

6.0 Ω

6.0 Ω

X Y

What is the combined resistance of this network between points X and Y?

A 0.86 Ω B 1.2 Ω C 3.5 Ω D 24 Ω Space for working

21


36 The gold nucleus Au185

79 undergoes alpha decay.

What are the nucleon (mass) number and proton (atomic) number of the nucleus formed by this decay?

nucleon number proton number

A 183 79

B 183 77

C 181 77

D 181 75

37 The nuclei of the isotopes of an element all contain the same number of a certain particle.

What is this particle?

A electron

B neutron

C nucleon

D proton Space for working

22

© UCLES 2009 9702/12/O/N/09

38 Alpha, beta and gamma radiations

1 are absorbed to different extents in solids,

2 behave differently in an electric field,

3 behave differently in a magnetic field.

The diagrams illustrate these behaviours.

paper 1 mmaluminium

1 cmlead

L

M

N

diagram 1 diagram 2

diagram 3

+

–

PQR

X

Y

Z magnetic fieldinto page

Which three labels on these diagrams refer to the same kind of radiation?

A L, P, X B L, P, Z C M, P, Z D N, Q, X Space for working

23


39 Two α-particles with equal energies are fired towards the nucleus of a gold atom.

Which diagram best represents their paths?

A

gold nucleus

B

gold nucleus

C

gold nucleus

D

gold nucleus

Space for working

24

Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity.

University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

© UCLES 2009 9702/12/O/N/09

40 The table contains some quantities, together with their symbols and units.

quantity symbol unit

gravitational field strength g N kg–1

density of liquid ρ kg m–3

vertical height h m

volume of part of liquid V m3

Which expression has the units of energy?

A gρ hV B g

hVρ C hV

gρ D ρ g2h

Space for working

This document consists of 17 printed pages and 3 blank pages.

IB08 11_9702_01/RP © UCLES 2008 [Turn over

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PHYSICS 9702/01


1 hour










Any rough working should be done in this booklet.

4

© UCLES 2008 9702/01/O/N/08

1 A laser emits light of wavelength 600 nm.

What is the distance, expressed as a number of wavelengths, travelled by the light in one second?

A 5 × 108 B 5 × 1011 C 5 × 1014 D 5 × 1017 2 At temperatures close to 0 K, the specific heat capacity c of a particular solid is given by c = bT

3, where T is the thermodynamic temperature and b is a constant characteristic of the solid.

What are the units of constant b, expressed in SI base units?

A m2 s

–2 K–3

B m2 s–2

K–4

C kg m2 s–2

K–3

D kg m2 s–2

K–4 3 The table shows the x-component and y-component of four force vectors.

Which force vector has the largest magnitude?

x-component / N y-component / N

A 2 9

B 3 8

C 4 7

D 5 6

4 A student uses a digital ammeter to measure a current. The reading of the ammeter is found to

fluctuate between 1.98 A and 2.02 A.

The manufacturer of the ammeter states that any reading has a systematic uncertainty of ± 1 %.

Which value of current should be quoted by the student?

A (2.00 ± 0.01) A

B (2.00 ± 0.02) A

C (2.00 ± 0.03) A

D (2.00 ± 0.04) A

5


5 A calibration graph is produced for a faulty ammeter.

1.0

1.000

ammeterreading / A

truecurrent / A

Which ammeter reading will be nearest to the correct value?

A 0.2 A B 0.4 A C 0.6 A D 0.8 A 6 The diagram shows a velocity-time graph for a car.

12

10

8

6

4

2

00 1 2 3 4

time / s

velocity/ m s–1

What is the distance travelled during the first 4.0 s?

A 2.5 m B 3.0 m C 20 m D 28 m

6

© UCLES 2008 9702/01/O/N/08

7 A stone is thrown upwards and follows a curved path.

Air resistance is negligible.

Why does the path have this shape?

A The stone has a constant horizontal velocity and constant vertical acceleration.

B The stone has a constant horizontal acceleration and constant vertical velocity.

C The stone has a constant upward acceleration followed by a constant downward acceleration.

D The stone has a constant upward velocity followed by a constant downward velocity. 8 Which graph represents the motion of a car that is travelling along a straight road with a speed

that increases uniformly with time?

00

A

00

B

00

C

00

D

acceleration

displacement

acceleration

displacement

time time

time time

7


9 A ball falls vertically and bounces on the ground.

The following statements are about the forces acting while the ball is in contact with the ground.


A The force that the ball exerts on the ground is always equal to the weight of the ball.

B The force that the ball exerts on the ground is always equal in magnitude and opposite in direction to the force the ground exerts on the ball.

C The force that the ball exerts on the ground is always less than the weight of the ball.

D The weight of the ball is always equal in magnitude and opposite in direction to the force that the ground exerts on the ball.

10 Two spheres approach each other along the same straight line. Their speeds are u1 and u2

before collision, and v1 and v2 after collision, in the directions shown below.

u1

v1

u2

v2

before collision

after collision

Which equation is correct if the collision is perfectly elastic?

A u1 – u2 = v2 + v1

B u1 – u2 = v2 – v1

C u1 + u2 = v2 + v1

D u1 + u2 = v2 – v1 11 A box of mass 8.0 kg rests on a horizontal, rough surface. A string attached to the box passes

over a smooth pulley and supports a 2.0 kg mass at its other end.

rough surface 8.0 kg

2.0 kg

boxsmoothpulley

When the box is released, a friction force of 6.0 N acts on it.

What is the acceleration of the box?

A 1.4 m s–2 B 1.7 m s–2 C 2.0 m s–2 D 2.5 m s–2

8

© UCLES 2008 9702/01/O/N/08

12 A wooden block rests on a rough board. The end of the board is then raised until the block slides down the plane of the board at constant velocity v.

v

board

block

Which row describes the forces acting on the block when sliding with constant velocity?

frictional force on block resultant force on block

A down the plane down the plane

B down the plane zero

C up the plane down the plane

D up the plane zero

13 A particle is in a uniform field. The particle experiences a force in the opposite direction to the

field.

Which field is the particle in, and on which property of the particle is the field acting?

field property of particle

on which the field acts

A electric charge

B electric current

C gravitational mass

D gravitational weight

14 Which pair of forces acts as a couple on the circular object?

F

F

A

2F

2F

F

B

F F

C

F

D

9


15 A block of weight W is pulled up a rough slope by a force F.

When the block has moved a distance x along the slope, it has risen height h.

W

x

h F

Which expressions give the amount of work done on the block and the amount of gravitational potential energy gained by the block?

work done gravitational potential

energy

A Fx Wh

B Fh Wx

C Wx Fh

D Wh Fx

16 An object is thrown into the air.

Which graph shows how the potential energy Ep of the object varies with height h above the ground?

Ep

h0

C

0

Ep

h00

DEp

h0

A

0

Ep

h0

B

0

10

© UCLES 2008 9702/01/O/N/08

17 A pendulum bob oscillates between P and R.

Q

P R

y

x

Assuming the gravitational potential energy lost in moving from P to Q is converted into kinetic energy, what is the speed of the bob at Q?

A gx2 B 2gx C gy2 D 2gy

18 Which operation involves the greatest mean power?

A a car moving against a resistive force of 0.4 kN at a constant speed of 20 m s–1

B a crane lifting a weight of 3 kN at a speed of 2 m s–1

C a crane lifting a weight of 5 kN at a speed of 1 m s–1

D a weight being pulled across a horizontal surface at a speed of 6 m s–1 against a frictional force of 1.5 kN

19 Which properties best describe modelling clay?

A brittle and ductile

B ductile and elastic

C elastic and plastic

D plastic and ductile 20 Why does the pressure of a gas increase when the gas is compressed at constant temperature?

A The gas molecules collide more often with each other.

B The gas molecules expand under pressure.

C The gas molecules hit the walls of the container more frequently.

D The gas molecules travel faster.

11


21 A number of similar springs, each having the same spring constant, are joined in four arrangements. The same load is applied to each.

Which arrangement gives the greatest extension?

load

A

load

B

load

C

load

D

22 The graphs show how force varies with extension and stress varies with strain for the loading of a

metal wire.

extension

force

strain

stress

00

00

The Young modulus for this wire is equal to

A the gradient of the force-extension graph.

B the area between the force-extension graph and the extension axis.

C the gradient of the stress-strain graph.

D the area between the stress-strain graph and the strain axis. 23 For a wire, Hooke’s law is obeyed for a tension F and extension x. The Young modulus for the

material of the wire is E.

Which expression represents the elastic strain energy stored in the wire?

A 2

1 E x B E x C

2

1 F x D F x

12

© UCLES 2008 9702/01/O/N/08

24 The diagram shows two waves X and Y.

00

displacement

time0

wave X

wave Y

Wave X has amplitude 8 cm and frequency 100 Hz.

What are the amplitude and frequency of wave Y?

amplitude / cm frequency / Hz

A 2 33

B 2 300

C 4 33

D 4 300

25 Light can exhibit all of the properties listed.

Which property can sound not exhibit?

A interference

B polarisation

C refraction

D total internal reflection

13


26 The diagram represents the screen of a cathode-ray oscilloscope displaying two sound waves labelled X and Y.

X

Y

What is the ratio Y wavesound ofintensity

X wavesound ofintensity ?

A 1

9 B

1

3 C

1

3 D

1

1

27 T is a microwave transmitter placed at a fixed distance from a flat reflecting surface S.

T

S

A small microwave receiver is moved from T towards S and receives signals of alternate maxima and minima of intensity.

The distance between one maximum and the next is 15 mm.

What is the frequency of the microwaves?

A 1.0 × 107 Hz

B 2.0 × 107 Hz

C 1.0 × 1010 Hz

D 2.0 × 1010 Hz

14

© UCLES 2008 9702/01/O/N/08

28 The diagram shows two loudspeakers producing sound waves that are in phase.

d

X

Y

loud

quiet

loud

quiet

loud

L

loudspeakers

As a student moves from X to Y, the intensity of the note she hears is alternately loud and quiet.

The distance between adjacent loud and quiet regions may be reduced by

A decreasing distance d.

B increasing distance L.

C decreasing the amplitude.

D increasing the frequency. 29 The diagram shows the electric field near a point charge and two electrons X and Y.

X

Y

Which row describes the forces acting on X and Y?

direction of force magnitude of force on X

A radially inwards less than force on Y

B radially inwards greater than force on Y

C radially outwards less than force on Y

D radially outwards greater than force on Y

15


30 A particle has a charge of 4.8 × 10–19 C. The particle remains at rest between a pair of horizontal,

parallel plates having a separation of 15 mm. The potential difference between the plates is 660 V.

What is the weight of the particle?

A 2.1 × 10−14 N

B 2.1 × 10−15 N

C 2.1 × 10−17 N

D 1.1 × 10−23 N

31 Two wires P and Q made of the same material and of the same length are connected in parallel

to the same voltage supply. Wire P has diameter 2 mm and wire Q has diameter 1 mm.

What is the ratio Q in current

P in current ?

A 4

1 B 2

1 C 1

2 D

1

4

32 An electric power cable consists of six copper wires c surrounding a steel core s.

cs

cc

cc

c

1.0 km of one of the copper wires has a resistance of 10 Ω and 1.0 km of the steel core has a

resistance of 100 Ω.

What is the approximate resistance of a 1.0 km length of the power cable?

A 0.61 Ω B 1.6 Ω C 160 Ω D 610 Ω 33 Which graph best represents the way the current I through a filament lamp varies with the

potential difference V across it?

00

V

I

A

00

V

I

B

00

V

I

C

00

V

I

D

16

© UCLES 2008 9702/01/O/N/08

34 The charge that a fully-charged 12 V car battery can supply is 100 kC. The starter motor of the car requires a current of 200 A for an average period of 2.0 s. The battery does not recharge because of a fault.

What is the maximum number of times the starter motor of the car can be used?

A 21 B 25 C 42 D 250 35 The diagram shows a circuit containing three resistors in parallel.

10 Ω

10 Ω

12 V

X

A

The battery has e.m.f. 12 V and negligible internal resistance. The ammeter reading is 3.2 A.

What is the resistance of X?

A 2.1 Ω B 4.6 Ω C 6.0 Ω D 15 Ω 36 The e.m.f. of the battery is 9.0 V. The reading on the high-resistance voltmeter is 7.5 V.

15 Ω

VI

9.0 V

What is the current I ?

A 0.10 A B 0.50 A C 0.60 A D 2.0 A

17

© UCLES 2008 9702/01/O/N/08

37 The diagram shows a potentiometer circuit.

T

E2

E1

X Y

R

The contact T is placed on the wire and moved along the wire until the galvanometer reading is zero. The length XT is then noted.

In order to calculate the potential difference per unit length on the wire XY, which value must also be known?

A the e.m.f. of the cell E1

B the e.m.f. of the cell E2

C the resistance of resistor R

D the resistance of the wire XY 38 Which conclusion can be drawn from the results of the experiment showing the scattering of

α-particles by gold foil?

A Electrons orbit the atomic nucleus in well-defined paths.

B Nuclei of different isotopes contain different numbers of neutrons.

C The atomic nucleus contains protons and neutrons.

D The nucleus is very small compared with the size of the atom.

39 A nucleus Q has the notation Qy

x.

Which of the following is an isotope of Q?

A Q1yx− B Q

y1x− C Q

y1x+ D Q

1y1x

−

+

40 A U238

92 nucleus decays in two stages to a Pa

234

91 nucleus.

What was emitted in these two stages?

A α + β B α + γ C β + β D β + γ


IB07 11_9702_01/3RP © UCLES 2007 [Turn over

*1945541248*


PHYSICS 9702/01


1 hour

Additional Materials: Multiple Choice Answer Sheet Soft Clean Eraser Soft pencil (type B or HB is recommended)










2

© UCLES 2007 9702/01/O/N/07

Data

speed of light in free space, c = 3.00 × 108 m s–1

permeability of free space, µ0 = 4π × 10–7

H m–1

permittivity of free space, ε0 = 8.85 × 10–12

F m–1

elementary charge, e = 1.60 × 10–19 C

the Planck constant, h = 6.63 × 10–34 J s

unified atomic mass constant, u = 1.66 × 10–27 kg

rest mass of electron, me = 9.11 × 10–31 kg

rest mass of proton, mp = 1.67 × 10–27 kg

molar gas constant, R = 8.31 J K–1 mol–1

the Avogadro constant, NA = 6.02 × 1023 mol–1

the Boltzmann constant, k = 1.38 × 10–23 J K–1

gravitational constant, G = 6.67 × 10–11 N m2

kg–2

acceleration of free fall, g = 9.81 m s–2

3


Formulae

uniformly accelerated motion, s = ut + 2

1 at

2

v2 = u2 + 2as

work done on/by a gas, W = p∆V

gravitational potential, φ = –

r

Gm

hydrostatic pressure, p = ρgh

pressure of an ideal gas, p = V

Nm3

1 <c

2>

simple harmonic motion, a = – ω

2x

velocity of particle in s.h.m., v = v0 cos ωt

v = ± ω √( 2

0x – x2)

electric potential, V = r

Q

04 επ

capacitors in series, 1 / C = 1 / C1 + 1 / C2 + . . .

capacitors in parallel, C = C1 + C2 + . . .

energy of charged capacitor, W = 2

1 QV

resistors in series, R = R1 + R2 + . . .

resistors in parallel, 1 / R = 1 / R1 + 1 / R2 + . . .

alternating current/voltage, x = x0 sin ωt

radioactive decay, x = x0 exp(–λt)

decay constant, λ =

2

1

0.693

t

4

© UCLES 2007 9702/01/O/N/07

1 The equation relating pressure and density is p = ρgh.

How can both sides of this equation be written in terms of base units?

A [N m–1] = [kg m–3] [m s–1] [m]

B [N m–2] = [kg m–3] [m s–2] [m]

C [kg m–1 s–2] = [kg m–3] [m s–2] [m]

D [kg m–1 s–1] = [kg m–1] [m s–2] [m]

2 What is a reasonable estimate of the diameter of an alpha particle?

A 10–15 m B 10–12

m C 10–9 m D 10–6

m 3 The diagram shows two vectors X and Y.

YX

In which vector triangle does the vector Z show the magnitude and direction of vector X–Y?

Y

Y

A

X

XZ

Y

B

C D

XZ

ZY

X

Z

5


4 A series of measurements of the acceleration of free fall g is shown in the table.

Which set of results is precise but not accurate?

g / m s–2

A 9.81 9.79 9.84 9.83 9.79

B 9.81 10.12 9.89 8.94 9.42

C 9.45 9.21 8.99 8.76 8.51

D 8.45 8.46 8.50 8.41 8.47

5 A mass m has acceleration a. It moves through a distance s in time t. The power used in

accelerating the mass is equal to the product of force and velocity. The percentage uncertainties are

0.1 % in m,

1 % in a,

1.5 % in s,

0.5 % in t.

What is the percentage uncertainty in the average power?

A 2.1 % B 2.6 % C 3.1 % D 4.1 %

6

© UCLES 2007 9702/01/O/N/07

6 The diagram shows the graduations of a correctly calibrated ammeter. When the current is zero, the pointer is at 0.

01 2 3 4 5

The ammeter is accidentally readjusted so that when the current is zero, the pointer is at X.

X0

1 2 3 4 5

Which calibration graph best represents the response of the readjusted ammeter?

Aangle of

deflection ofpointer from

the zero mark

angle ofdeflection ofpointer from

the zero mark


the zero mark


the zero mark

current

current

current

current

B

C D

00

00

00

00

7


7 The symbol g represents the acceleration of free fall.

Which of these statements is correct?

A g is gravity.

B g is reduced by air resistance.

C g is the ratio weight / mass.

D g is the weight of an object. 8 A particle moves along a straight line. A particular property K of the particle's motion is plotted

against time.

K

time0

0

At any time, the slope of the graph is the acceleration of the particle.

What is the property K?

A the displacement of the particle

B the distance travelled by the particle

C the speed of the particle

D the velocity of the particle

8

© UCLES 2007 9702/01/O/N/07

9 A stone is thrown vertically upwards. A student plots the variation with time of its velocity.

40

30

20

10

0

–10

–20

–30

–40

6543210 time / s

velocity / m s–1

What is the vertical displacement of the stone from its starting point after 5 seconds?

A 20 m B 25 m C 45 m D 65 m 10 A block of mass 0.60 kg is on a rough horizontal surface. A force of 12 N is applied to the block

and it accelerates at 4.0 m s–2.

12 N

4.0 m s–2

block

What is the magnitude of the frictional force acting on the block?

A 2.4 N B 5.3 N C 6.7 N D 9.6 N

9


11 A car with front-wheel drive accelerates in the direction shown.

Which diagram best shows the direction of the total force exerted by the road on the front wheels?

A B C D

12 The graph shows how a certain quantity p varies with another quantity q for a parachutist falling

at terminal speed.

p

q00

What are the quantities p and q, and what is represented by the magnitude of the gradient of the graph?

quantity p quantity q magnitude of gradient

A height time terminal speed

B momentum time weight of parachutist

C height potential energy mass of parachutist

D velocity time acceleration of free fall

10

© UCLES 2007 9702/01/O/N/07

13 Which two vector diagrams represent forces in equilibrium?

P Q

R S

A P and Q B Q and R C R and S D S and P 14 The diagram shows a plan view of a door which requires a moment of 12 N m to open it.

wall wall

door

hinge 0.80 m

What is the minimum force that must be applied at the door’s midpoint to ensure it opens?

A 4.8 N B 9.6 N C 15 N D 30 N 15 A car of mass 1000 kg first travels forwards at 25 m s–1 and then backwards at 5 m s–1.

What is the change in the kinetic energy of the car?

A 200 kJ B 300 kJ C 325 kJ D 450 kJ

11


16 When bungee jumping, a student starts with maximum gravitational potential energy (position 1), then falls freely until the rope fully unwinds (position 2), after which the rope starts to stretch until the lowest point of the jump is reached (position 3).

position 1

position 2

position 3

What are the kinetic and elastic potential energies at position 3?

kinetic energy elastic potential energy

A maximum maximum

B maximum minimum

C minimum maximum

D minimum minimum

17 Two solid substances P and Q have atoms of mass MP and MQ respectively. There are nP and nQ

atoms per unit volume respectively.

It is found by experiment that the density of P is greater than that of Q.

Which deduction from this experiment must be correct?

A MP > MQ

B nP > nQ

C MPnP > MQnQ

D P

P

M

n > Q

Q

M

n

12

© UCLES 2007 9702/01/O/N/07

18 A submarine carries a pressure meter so that the crew can work out how far they are below the surface of the sea. At the surface, the meter indicates a pressure of 100 kPa. The density of seawater is 1030 kg m–3.

What is the depth below the surface when the meter reads 450 kPa?

A 34.6 m B 44.5 m C 340 m D 437 m 19 What is plastic deformation?

A Plastic deformation occurs when strain is not proportional to stress but when the load is removed the material returns to its original length.

B Plastic deformation occurs if, when the load is removed, the material contracts but a permanent stretching has occurred.

C Plastic deformation occurs until the extension is no longer proportional to the load.

D Plastic deformation occurs when the material extends so that strain is directly proportional to stress.

20 The graph shows how the length of a particular rubber cord varies as force is applied.

250

0

0.20

0.40

force / N

length / m

What is the maximum strain energy in this deformed rubber cord?

A 2.5 J B 5.0 J C 7.5 J D 10 J 21 What is the relationship between the intensity I and the amplitude a of a wave?

A a

I = constant

B 2

a

I = constant

C I a = constant

D I a2 = constant

13


22 An electromagnetic wave has a frequency of 108 Hz.

In which region of the electromagnetic spectrum does the wave occur?

A infra-red

B radio

C ultraviolet

D visible 23 The graph represents a sinusoidal wave in the sea, travelling at a speed of 8.0 m s–1, at one

instant of time. The maximum speed of the oscillating particles in the wave is 2πaf, where a is the amplitude and f is the frequency.

50 100

2

0

–2

position/ m

displacement/ m

0P

An object P of mass 2.0 × 10–3 kg floats on the surface.

What is the maximum kinetic energy of P due to the wave? Assume that its motion is vertical.

A 0.026 mJ B 4.0 mJ C 39 mJ D 64 mJ 24 Monochromatic light illuminates two narrow parallel slits. The interference pattern which results is

observed on a screen some distance beyond the slits.

Which change increases the separation between the dark lines of the interference pattern?

A decreasing the distance between the screen and the slits

B increasing the distance between the slits

C using monochromatic light of higher frequency

D using monochromatic light of longer wavelength 25 A narrow beam of monochromatic light is incident normally on a diffraction grating. Third-order

diffracted beams are formed at angles of 45

o to the original direction.

What is the highest order of diffracted beam produced by this grating?

A 3rd B 4th C 5th D 6th

14

© UCLES 2007 9702/01/O/N/07

26 An electron is situated in a uniform electric field as shown in the diagram.

fieldelectron

What is the direction of the electric force acting on the electron?

A downwards into the paper

B upwards out of the paper

C to the left

D to the right 27 Which diagram shows the electric field between a positively charged metal sphere and an

earthed metal plate?

++++

A B C D

28 Which electrical quantity would be the result of a calculation in which energy transfer is divided by

charge?

A current

B potential difference

C power

D resistance 29 Two heating coils X and Y, of resistance RX and RY respectively, deliver the same power when

12 V is applied across X and 6 V is applied across Y.

What is the ratio RX / RY?

A ¼ B ½ C 2 D 4

15


30 A battery of negligible internal resistance is connected to two 10 Ω resistors in series.

10 Ω

6.0 V

10 Ω

What charge flows through each of the 10 Ω resistors in 1 minute?

A 0.30 C B 0.60 C C 3.0 C D 18 C 31 Two wires P and Q have resistances RP and RQ respectively. Wire P is twice as long as wire Q

and has twice the diameter of wire Q. The wires are made of the same material.

What is the ratio Q

P

R

R?

A 0.5 B 1 C 2 D 4 32 A potential divider consists of a fixed resistor R and a light-dependent resistor (LDR).

V

R

What happens to the voltmeter reading, and why does it happen, when the intensity of light on the LDR increases?

A The voltmeter reading decreases because the LDR resistance decreases.

B The voltmeter reading decreases because the LDR resistance increases.

C The voltmeter reading increases because the LDR resistance decreases.

D The voltmeter reading increases because the LDR resistance increases.

16

© UCLES 2007 9702/01/O/N/07

33 The circuit is designed to trigger an alarm system when the input voltage exceeds some preset value. It does this by comparing Vout with a fixed reference voltage, which is set at 4.8 V.

15 k Ω

10 k Ω Vout

Vin

Vout is equal to 4.8 V. What is the input voltage Vin?

A 4.8 V B 7.2 V C 9.6 V D 12 V 34 A potentiometer is used as shown to compare the e.m.f.s of two cells.

0.90 m0.70 m

driver cell

metre rule

X

Y

The balance points for cells X and Y are 0.70 m and 0.90 m respectively.

If the e.m.f. of cell X is 1.1 V, what is the e.m.f. of cell Y?

A 0.69 V B 0.86 V C 0.99 V D 1.4 V

17


35 When four identical resistors are connected as shown in diagram 1, the ammeter reads 1.0 A and the voltmeter reads zero.

AV

6.0 V

A

V

6.0 V

diagram 1 diagram 2

The resistors and meters are reconnected to the supply as shown in diagram 2.

What are the meter readings in diagram 2?

voltmeter reading / V ammeter reading / A

A 0 1.0

B 3.0 0.5

C 3.0 1.0

D 6.0 0

36 How is it possible to distinguish between the isotopes of uranium?

A Their nuclei have different charge and different mass, and they emit different particles when they decay.

B Their nuclei have different charge but the same mass.

C Their nuclei have the same charge but different mass.

D Their nuclei have the same charge and mass, but they emit different particles when they decay.

37 What is not conserved in nuclear processes?

A energy and mass together

B nucleon number

C neutron number

D charge

18

© UCLES 2007 9702/01/O/N/07

38 A thin gold foil is bombarded with α-particles as shown.

incident α-particles

gold foil

What can be deduced from this experiment?

A the binding energy of a gold nucleus

B the energy levels of electrons in gold atoms

C the small size of a gold nucleus

D the structure of a gold nucleus

39 A zirconium nucleus, Zr100

40, is a β-emitter. The product nucleus is also a β-emitter.

What is the final resulting nucleus of these two decays?

A 100

38Sr B 100

42Mo C 98

40Zr D 102

40Zr

40 The following particles are each accelerated from rest through the same potential difference.

Which one completes the acceleration with the greatest momentum?

A α-particle

B electron

C neutron

D proton

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS

General Certificate of Education Advanced Subsidiary Level and Advanced Level

PHYSICS 9702/01


1 hour



Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.

This document consists of 19 printed pages and 1 blank page.

IB06 11_9702_01/2RP

UCLES 2006

[Turn over

4

© UCLES 2006 9702/01/O/N/06

1 Which product-pair of metric prefixes has the greatest magnitude?

A pico × mega

B nano × kilo

C micro × giga

D milli × tera 2 In the expressions below

a is acceleration,

F is force,

m is mass,

t is time,

v is velocity.

Which expression represents energy?

A Ft B Fvt C 2mv

t D

2

2at

3 Which row of the table shows a physical quantity and its correct unit?

physical quantity unit

A electric field strength kg m s–2 C–1

B specific heat capacity kg–1 m2

s–2 K–1

C tensile strain kg m–1 s–2

D the Young modulus kg m–1 s–3

5


4 The Y-input terminals of a cathode-ray oscilloscope (c.r.o.) are connected to a supply of peak value 5.0 V and of frequency 50 Hz. The time-base is set at 10 ms per division and the Y-gain at 5.0 V per division.

Which trace is obtained?

A

C D

B

5 The measurement of a physical quantity may be subject to random errors and to systematic

errors.


A Random errors can be reduced by taking the average of several measurements.

B Random errors are always caused by the person taking the measurement.

C A systematic error cannot be reduced.

D A systematic error results in a different reading each time the measurement is taken.

6

© UCLES 2006 9702/01/O/N/06

6 An experiment is done to measure the resistance of a wire.

The current in the wire is 1.0 ± 0.2 A and the potential difference across the wire is 8.0 ± 0.4 V.

What is the resistance of the wire and its uncertainty?

A (8.0 ± 0.2) Ω

B (8.0 ± 0.6) Ω

C (8 ± 1) Ω

D (8 ± 2) Ω 7 A particle is moving in a straight line with uniform acceleration.

Which graph represents the motion of the particle?

distance

00 time

A

velocity

00 time

B

velocity

00 time

C

acceleration

00 time

D

7


8 The graph shows velocity-time plots for two vehicles X and Y. The accelerations and distances travelled by the two vehicles can be estimated from these plots.

1 2 3 4 5

5

4

3

2

1

00

X

Y

time / s

velocity / m s–1


A The accelerations of X and Y are the same at 2.5 s.

B The initial acceleration of Y is greater than that of X.

C The distance travelled by X is greater than that travelled by Y in the 5 s period.

D The distances travelled by X and Y in the 5 s period are the same.

8

© UCLES 2006 9702/01/O/N/06

9 A projectile is fired at an angle α to the horizontal at a speed u, as shown.

u

α

What are the vertical and horizontal components of its velocity after a time t ? Assume that air resistance is negligible. The acceleration of free fall is g.

vertical component horizontal component

A u sin α u cos α

B u sin α – gt u cos α – gt

C u sin α – gt u cos α

D u cos α u sin α – gt

10 A force F is applied to a freely moving object. At one instant of time, the object has velocity v and

acceleration a.

Which quantities must be in the same direction?

A a and v only

B a and F only

C v and F only

D v, F and a

9


11 The diagram shows two identical spheres X and Y.

X Y

v

Initially X moves with speed v directly towards Y. Y is stationary. The spheres collide elastically.

What happens?

X Y

A moves with speed 2

1

v to the right moves with speed 2

1

v to the right

B moves with speed v to the left remains stationary

C moves with speed 2

1

v to the left moves with speed 2

1

v to the right

D stops moves with speed v to the right

12 The diagram shows a cannon ball fired from a cannon.

cannon cannonball

The mass of the cannon is 1000 kg and the mass of the cannon ball is 10 kg.

The recoil velocity of the cannon is 5 m s–1 horizontally.

What is the horizontal velocity of the cannon ball?

A 200 m s–1 B 500 m s–1 C 2000 m s–1 D 5000 m s–1 13 Which force is caused by a pressure difference?

A friction

B upthrust

C viscous force

D weight

10

© UCLES 2006 9702/01/O/N/06

14 A rigid circular disc of radius r has its centre at X. A number of forces of equal magnitude F act at the edge of the disc. All the forces are in the plane of the disc.

Which arrangement of forces provides a moment of magnitude 2Fr about X?

A B

F

F F

F

F

F

C D

F F

X X

X X

15 Three coplanar forces, each of magnitude 10 N, act through the same point of a body in the

directions shown.

30o 30o

10 N

10 N10 N

What is the magnitude of the resultant force?

A 0 N B 1.3 N C 7.3 N D 10 N 16 To get to his office from the entrance of the building, a man has to walk up six flights of stairs.

The height of each flight is 2.5 m and the man has a mass of 80 kg.

What is the approximate gain in the man’s gravitational potential energy during the climb?

A 1200 J B 2000 J C 4800 J D 12 000 J

11


17 In many old-style filament lamps, as much as 93 J of energy is emitted as thermal energy for every 7 J of energy emitted as light.

What is the efficiency of the lamp, as the percentage of electrical energy converted to light energy?

A 7 % B 8 % C 92 % D 93 % 18 An electric railway locomotive has a maximum mechanical output power of 4.0 MW. Electrical

power is delivered at 25 kV from overhead wires. The overall efficiency of the locomotive in converting electrical power to mechanical power is 80 %.

What is the current from the overhead wires when the locomotive is operating at its maximum power?

A 130 A B 160 A C 200 A D 250 A 19 Which statement defines the density of a substance?

A the force per unit area acting on the substance

B the increase in length per unit length of the substance

C the mass per unit volume of the substance

D the work done per unit time by the substance 20 The table summarises some properties of evaporation.

Which row of the table is correct?

involves a change in state

from liquid to vapour occurs at a fixed

temperature

involves a reduction in the average kinetic energy of the remaining

atoms

A true true true

B true false true

C true false false

D false true false

12

© UCLES 2006 9702/01/O/N/06

21 A bore hole of depth 2000 m contains both oil and water as shown. The pressure at the bottom is 17.5 MPa. The density of the oil is 830 kg m–3 and the density of the water is 1000 kg m–3.

oil

water

x

2000 m

What is the depth x of the oil?

A 907 m B 1000 m C 1090 m D 1270 m 22 What is represented by the gradient of a graph of force (vertical axis) against extension

(horizontal axis)?

A elastic limit

B spring constant

C stress

D the Young modulus 23 What is the unit of the Young modulus?

A N m–1 B N m C N m–2 D N m2 24 A wave motion is described by the oscillation of particles.

What is the name given to the number of complete oscillations of a particle in one second?

A amplitude

B frequency

C wavelength

D wave speed

13


25 A displacement-time graph for a transverse wave is shown in the diagram.

00

X

Y

displacement

time

The phase difference between X and Y can be expressed as nπ.

What is the value of n?

A 1.5 B 2.5 C 3.0 D 6.0 26 Continuous water waves are diffracted through a gap in a barrier in a ripple tank.

Which change will cause the diffraction of the waves to increase?

A increasing the frequency of the waves

B increasing the width of the gap

C reducing the wavelength of the waves

D reducing the width of the gap 27 The interference patterns from a diffraction grating and a double slit are compared.

Using the diffraction grating, yellow light of the first order is seen at 30° to the normal to the grating.

The same light produces interference fringes on a screen 1.0 m from the double slit. The slit separation is 500 times greater than the line spacing of the grating. What is the fringe separation on the screen?

A 2.5 × 10–7 m

B 1.0 × 10–5 m

C 1.0 × 10–3 m

D 1.0 × 10–1 m

14

© UCLES 2006 9702/01/O/N/06

28 What may be used to produce stationary waves?

A blowing air over the top of an empty bottle

B making a loud sound near a mountain

C passing monochromatic light through a double slit

D passing water waves through a narrow slit 29 Which diagram shows the electric field pattern of an isolated negative point charge?

–

A

–

B

–

C

–

D

30 An electric field exists in the space between two charged metal plates.

X

Y

+

–

Which graph shows the variation of electric field strength E with distance d from X along the line XY?

E

d

A

00

E

d

B

00

E

d

C

00

E

d

D

00

15


31 Four point charges, each of charge Q, are placed on the edge of an insulating disc of radius r.

The frequency of rotation of the disc is f.

r

Q

Q Q

Q

What is the equivalent electric current at the edge of the disc?

A 4Qf B f

Q4 C 8πrQf D rQfπ

2

32 Which graph shows the I – V characteristic of a filament lamp?

A

V

I

D

V

I

C

V

I

B

V

I

00

00

00

00

16

© UCLES 2006 9702/01/O/N/06

33 An electrical component has a potential difference V across it and a current I through it. A graph of I against V is drawn and is marked in three sections WX, XY and YZ.

00

I

V

X

W

YZ

In which ways does the resistance of the component vary within each of the three sections?

WX XY YZ

A constant decreases increases

B constant increases increases

C increases decreases constant

D increases increases decreases

34 The diagram shows a potentiometer and a fixed resistor connected across a 12 V battery of

negligible internal resistance.

output

12 V

20 Ω

20 Ω

The fixed resistor and the potentiometer each have resistance 20 Ω. The circuit is designed to provide a variable output voltage.

What is the range of output voltages?

A 0 – 6 V B 0 – 12 V C 6 – 12 V D 12 – 20 V

17


35 The resistance of a device is designed to change with temperature.

What is the device?

A a light-dependent resistor

B a potential divider

C a semiconductor diode

D a thermistor 36 The diagram represents a circuit.

A

20.2 mA

10.8 mA10.6 mA

I2

I1

Some currents have been shown on the diagram.

What are the currents I1 and I2?

I1 I2

A 0.2 mA 10.8 mA

B 0.2 mA 30.8 mA

C –0.2 mA 20.0 mA

D –0.2 mA 30.8 mA

18

© UCLES 2006 9702/01/O/N/06

37 Which circuit has a resistance of 40 Ω between the terminals?

100 Ω

100 Ω

100 Ω

100 Ω

100 Ω

100 Ω

100 Ω

100 Ω 100 Ω

A B

20 Ω 20 Ω

20 Ω

20 Ω 20 Ω 20 Ω

20 Ω 20 Ω

C D

38 Which statement concerning α-particles is correct?

A An α-particle has charge +4e.

B An α-particle is a helium atom.

C When α-particles travel through air, they cause ionisation.

D When α-particles travel through a sheet of gold foil, they make the gold radioactive. 39 Where are electrons, neutrons and protons found in an atom?

electrons neutrons protons

A in the nucleus in the nucleus orbiting the nucleus

B in the nucleus orbiting the nucleus in the nucleus

C orbiting the nucleus in the nucleus orbiting the nucleus

D orbiting the nucleus in the nucleus in the nucleus

19

© UCLES 2006 9702/01/O/N/06

40 Radon Rn222

86 decays by α− and β−emission to bismuth Bi214

83 .

For the decay of each nucleus of radon, how many α− and β−particles are emitted?

α−particles β−particles

A 1 1

B 2 1

C 1 2

D 2 2



PHYSICS 9702/01


1 hour




This document consists of 19 printed pages and 1 blank page.

IB05 11_9702_01/2RP

UCLES 2005

[Turn over

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© UCLES 2005 9702/01/O/N/05

1 Which pair of units are both SI base units?

A ampere, degree celsius

B ampere, kelvin

C coulomb, degree celsius

D coulomb, kelvin 2 The prefix ‘centi’ indicates x 10–2.

Which line in the table correctly indicates the prefixes micro, nano and pico?

x 10–12 x 10–9 x 10–6

A nano micro pico

B nano pico micro

C pico nano micro

D pico micro nano

3 Which expression involving base units is equivalent to the volt?

A kg m2 s–1

A–1

B kg m s–2 A

C kg m2 s–1

A

D kg m2 s–3

A–1 4 A steel rule can be read to the nearest millimetre. It is used to measure the length of a bar whose

true length is 895 mm. Repeated measurements give the following readings.

length / mm 892, 891, 892, 891, 891, 892

Are the readings accurate and precise to within 1 mm?

results are accurate to within 1 mm

results are precise to within 1 mm

A no no

B no yes

C yes no

D yes yes

5


5 The density of the material of a rectangular block is determined by measuring the mass and linear dimensions of the block. The table shows the results obtained, together with their uncertainties.

mass = (25.0 ± 0.1) g

length = (5.00 ± 0.01) cm

breadth = (2.00 ± 0.01) cm

height = (1.00 ± 0.01) cm

The density is calculated to be 2.50 g cm–3.

What is the uncertainty in this result?

A ± 0.01 g cm–3 B ± 0.02 g cm–3 C ± 0.05 g cm–3 D ± 0.13 g cm–3 6 A football is dropped from the top of a tall building.

Which acceleration-time graph best represents the motion of the football through the air?

00

00

00

00

A

C

B

D

acceleration acceleration

accelerationacceleration

time

time time

time

6

© UCLES 2005 9702/01/O/N/05

7 Two markers M1 and M2 are set up a vertical distance h apart.

M1

M2

time zero

time t1

time t2

x

h

steel ball

A steel ball is released at time zero from a point a distance x above M1. The ball reaches M1 at time t1 and reaches M2 at time t2. The acceleration of the ball is constant.

Which expression gives the acceleration of the ball?

A 2

2

2

t

h B

)(12

2

tt

h

+

C 2

12

2

)( tt

h

−

D )(

2

1

2

2

2

tt

h

−

8 A car driver sharply presses down the accelerator when the traffic lights go green. The resultant

horizontal force acting on the car varies with time as shown.

00

force

time

Which graph shows the variation with time of the speed of the car?

DC

B

00

speed

time

00

speed

time 00

speed

time

00

speed

time

A

7


9 Which is a statement of the principle of conservation of momentum?

A A force is equal to the rate of change of momentum of the body upon which it acts.

B In a perfectly elastic collision, the relative momentum of the bodies before impact is equal to their relative momentum after impact.

C The momentum of a body is the product of the mass of the body and its velocity.

D The total momentum of a system of interacting bodies remains constant, providing no external force acts.

10 The gravitational field strength on the surface of planet P is one tenth of that on the surface of

planet Q.

On the surface of P, a body has its mass measured to be 1.0 kg and its weight measured to be 1.0 N.

What results are obtained for measurements of the mass and weight of the same body on the surface of planet Q?

mass on Q weight on Q

A 1.0 kg 0.1 N

B 1.0 kg 10 N

C 10 kg 10 N

D 10 kg 100 N

11 A stone is projected horizontally in a vacuum and moves along a path as shown. X is a point on

this path. XV and XH are vertical and horizontal lines respectively through X. XT is the tangent to the path at X.

HX

VT

path of stone

Along which direction or directions do forces act on the stone at X?

A XV B XH C XV and XH D XT

8

© UCLES 2005 9702/01/O/N/05

12 A uniform beam of weight 100 N is pivoted at P as shown. Weights of 10 N and 20 N are attached to its ends.

The length of the beam is marked off at 0.1 m intervals.

At which point should a further weight of 20 N be attached to achieve equilibrium?

A B C D

P

10 N

0.1 m

20 N

0.6 m 0.4 m

13 The diagram shows four forces applied to a circular object.

30 N

30 N

45 N

45 N

Which of the following describes the resultant force and resultant torque on the object?

resultant force resultant torque

A non-zero non-zero

B non-zero zero

C zero non-zero

D zero zero

14 A car with a total mass of 1400 kg is travelling at 30 m s–1.

What is the kinetic energy of the car?

A 21 kJ B 42 kJ C 630 kJ D 1260 kJ

9


15 An object is thrown into the air.

Which graph shows how the potential energy Ep of the object varies with height h above the ground?

Ep

h0

C

0

Ep

h00

D

Ep

h0

A

0

Ep

h0

B

0

16 The diagram shows a barrel of weight 1.0 x 103

N on a frictionless slope inclined at 30

o to the horizontal.

barrel

force

slope

30 o

1.0 x 103 N

force of slope

on barrel

A force is applied to the barrel to move it up the slope at constant speed. The force is parallel to the slope.

What is the work done in moving the barrel a distance of 5.0 m up the slope?

A 1.0 x 104 J B 2.5 x 103

J C 4.3 x 103 J D 5.0 x 103

J 17 Why does the pressure increase when a sealed container of gas is heated?

A The gas molecules collide more often with each other.

B The gas molecules expand when they are heated.

C The gas molecules travel faster and hit the walls of the container more often.

D There are more gas molecules present to collide with the walls of the container.

10

© UCLES 2005 9702/01/O/N/05

18 Liquids X and Y are stored in large open tanks. Liquids X and Y have densities of 800 kg m–3 and 1200 kg m–3 respectively.

At what depths are the pressures equal?

depth in liquid X depth in liquid Y

A 8 m 12 m

B 10 m 10 m

C 15 m 10 m

D 18 m 8 m

19 When white sugar granules are heated, they melt. When the melt is cooled quickly, a brittle solid

form of toffee is produced.

How does the structure of the sugar change?

A amorphous to polymeric

B crystalline to amorphous

C crystalline to polymeric

D polymeric to amorphous 20 A ductile material is stretched by a tensile force to a point beyond its elastic limit. The tensile

force is then reduced to zero. The graph of force against extension is shown below.

00

force

extension

X

Y

Z

Which area represents the net work done on the sample?

A X B X + Y C Y + Z D Z

11


21 A wire stretches 8 mm under a load of 60 N.

A second wire of the same material, with half the diameter and a quarter of the original length of the first wire, is stretched by the same load.

Assuming that Hooke’s law is obeyed, what is the extension of this wire?

A 1 mm B 4 mm C 8 mm D 16 mm 22 Polarisation is a phenomenon associated with a certain type of wave.

Which condition must be fulfilled if a wave is to be polarised?

A It must be a light wave.

B It must be a longitudinal wave.

C It must be a radio wave.

D It must be a transverse wave. 23 A sound wave has displacement y at distance x from its source at time t.

Which graph correctly shows the amplitude a and the wavelength λ of the wave?

A

distance x

y

a

λ

0

B

distance x

y

a

λ

0

C

time t

y

a

λ

0

D

time t

y

a

λ

0

0 0

0 0

12

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24 The intensity of a progressive wave is proportional to the square of the amplitude of the wave. It is also proportional to the square of the frequency.

The variation with time t of displacement x of particles in a medium, when two progressive waves P and Q pass separately through the medium, are shown on the graphs.

t0

0

x0

x x

t0 2t0

wave P

t0

0

x0

2x0

t0 2t0

wave Q

The intensity of wave P is I0.

What is the intensity of wave Q?

A ½ I0 B I0 C 8 I0 D 16 I0 25 A sound wave of frequency 150 Hz travels in water at a speed of 1500 m s–1. It then travels

through the surface of the water and into air, where its speed is 300 m s–1.

Which line in the table gives the correct values for the wavelengths of the sound in water and in air?

wavelength in

water / m wavelength in

air / m

A 0.10 0.10

B 0.10 0.50

C 10 2.0

D 10 50

13


26 The graph represents a standing wave at two different times.

X Y

distance along

the wave

displacement

What does the distance XY represent?

A half the amplitude

B half the frequency

C half the period

D half the wavelength 27 In which situation does diffraction occur?

A A wave bounces back from a surface.

B A wave passes from one medium into another.

C A wave passes through an aperture.

D Waves from two identical sources are superposed. 28 Light of wavelength 700 nm is incident on a pair of slits, forming fringes 3.0 mm apart on a screen.

What is the fringe spacing when light of wavelength 350 nm is used and the slit separation is doubled?

A 0.75 mm B 1.5 mm C 3.0 mm D 6.0 mm

14

© UCLES 2005 9702/01/O/N/05

29 A diffraction grating is used to measure the wavelength of monochromatic light.

The spacing of the slits in the grating is 1.15 × 10–6 m. The angle between the first order

diffraction maxima is 60.0o, as shown in the diagram.

60.0omonochromatic

light

grating

What is the wavelength of the light?

A 287 nm B 498 nm C 575 nm D 996 nm 30 A positively charged particle is projected into a region of uniform electric field E.

Which diagram represents the motion of the particle in the electric field?

A B

C D

E

+

E

+

+ +

electric field in plane of the paper electric field in plane of the paper

electric field into paper electric field into paper

E E

15


31 Two large parallel plates X and Z are placed 5.0 mm apart and connected as shown to the terminals of a 200 volt d.c. supply.

X Z

P

200 V

A small oil drop at P carries one excess electron.

What is the magnitude of the electrostatic force acting on the oil drop due to the electric field between the plates?

A 6.4 x 10–15 N

B 6.4 x 10–18 N

C 1.6 x 10–19 N

D 4.0 x 10–24 N

16

© UCLES 2005 9702/01/O/N/05

32 The graphs show the variation with potential difference V of the current I for three circuit components.

graph X

V0

I

graph Z

V0

I

graph Y

V00 00

I

The components are a metal wire at constant temperature, a semiconductor diode and a filament lamp.

Which row of the table correctly identifies these graphs?

metal wire at constant temperature

semiconductor diode

filament lamp

A X Z Y

B Y X Z

C Y Z X

D Z X Y

33 Tensile strain may be measured by the change in electrical resistance of a strain gauge. A strain

gauge consists of folded fine metal wire mounted on a flexible insulating backing sheet. The strain gauge is firmly attached to the specimen, so that the strain in the metal wire is always identical to that in the specimen.

specimen

strain gauge

When the strain in the specimen is increased, what happens to the resistance of the wire?

A It decreases, because the length decreases and the cross-sectional area increases.

B It decreases, because the length increases and the cross-sectional area decreases.

C It increases, because the length decreases and the cross-sectional area increases.

D It increases, because the length increases and the cross-sectional area decreases.

17


34 The graph shows how the electric current I through a conducting liquid varies with the potential difference V across it.

At which point on the graph does the liquid have the smallest resistance?

00

I

V

A

B

C

D

35 An electrical component has the following circuit symbol.

What does this symbol represent?

A variable resistor (rheostat)

B fuse

C light-dependent resistor

D thermistor 36 Three resistors are connected in series with a battery as shown in the diagram. The battery has

negligible internal resistance.

120 Ω

180 Ω

150 Ω

6.0 V

What is the potential difference across the 180 Ω resistor?

A 1.6 V B 2.4 V C 3.6 V D 6.0 V

18

© UCLES 2005 9702/01/O/N/05

37 In the circuit below, the reading VT on the voltmeter changes from high to low as the temperature of the thermistor changes. The reading VL on the voltmeter changes from high to low as the level of light on the light-dependent resistor (LDR) changes.

V VVT VL

The readings on VT and VL are both high.

What are the conditions of temperature and light level?

temperature light level

A low low

B low high

C high low

D high high

38 An atomic nucleus emits a β-particle.

What change does this cause to the proton and nucleon numbers of the nucleus?

proton number nucleon number

A –1 +1

B 0 –1

C +1 –1

D +1 0

19

© UCLES 2005 9702/01/O/N/05

39 Two α-particles with equal energies are fired towards the nucleus of a gold atom.

Which diagram best represents their paths?

A

gold nucleus

B

gold nucleus

C

gold nucleus

D

gold nucleus

40 A nuclear reaction is represented by the equation

O16

8 + He

4

2 → F

19

9 + X.

What is particle X?

A an α-particle

B a β-particle

C a neutron

D a proton



PHYSICS 9702/01


1 hour





IB04 11_9702_01/4RP

UCLES 2004

[Turn over

4

© UCLES 2004 9702/01/O/N/04

1 Which line of the table gives values that are equal to a time of 1 ps (one picosecond) and a distance of 1 Gm (one gigametre)?

time of 1 ps distance of 1 Gm

A 10–9 s 109

m

B 10–9 s 1012

m

C 10–12 s 109

m

D 10–12 s 1012

m

2 Which of the following definitions is correct and uses only quantities rather than units?

A Density is mass per cubic metre.

B Potential difference is energy per unit current.

C Pressure is force per unit area.

D Speed is distance travelled per second.

3 When a beam of light is incident on a surface, it delivers energy to the surface. The intensity of

the beam is defined as the energy delivered per unit area per unit time.

What is the unit of intensity, expressed in SI base units?

A kg m–2 s–1 B kg m2 s–3 C kg s–2 D kg s–3

5


4 The deflection of the needle of an ammeter varies with the current passing through the ammeter as shown in the graph.

deflection

of the

ammeter needle

00 current

Which diagram could represent the appearance of the scale of this meter?

A B

C D

01 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8

9

01 2 3 4 5 6 7 8

9 0 1 2 3 4 5 6 7 8 9

6

© UCLES 2004 9702/01/O/N/04

5 When a 12 V 50 Hz supply is connected to the Y-terminals of an oscilloscope, the trace in the diagram is obtained.

1 cm

1 cm

What is the setting of the time-base control?

A 2.0 ms cm–1 B 2.5 ms cm–1 C 5 ms cm–1 D 20 ms cm–1

6 Four students each made a series of measurements of the acceleration of free fall g. The table

shows the results obtained.

Which student obtained a set of results that could be described as precise but not accurate?

student results, g / m s–2

A 9.81 9.79 9.84 9.83

B 9.81 10.12 9.89 8.94

C 9.45 9.21 8.99 8.76

D 8.45 8.46 8.50 8.41

7


7 In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The stone reaches point Q just before landing.

P

T

Q

The vertical component of acceleration of the stone is

A zero at T.

B greatest at T.

C greatest at Q.

D the same at Q as at T. 8 When a car driver sees a hazard ahead, she applies the brakes as soon as she can and brings

the car to rest. The graph shows how the speed v of the car varies with time t after the hazard is seen.

t00 t1

v

t2

Which graph represents the variation with time t of the distance s travelled by the car after the hazard has been seen?

0t1

s

tt200 t1

s

tt2

00 t1

s

tt200 t1

s

tt2

A B

C D

0

8

© UCLES 2004 9702/01/O/N/04

9 An object falls 10.0 m from rest before entering some water.

Assuming negligible air resistance, what is the time taken to reach the water and the speed with which the object reaches the water?

time / ms speed / m s–1

A 1.02 10.0

B 1.02 14.0

C 1.43 10.0

D 1.43 14.0

10 A constant mass undergoes uniform acceleration.

Which of the following is a correct statement about the resultant force acting on the mass?

A It increases uniformly with respect to time.

B It is constant but not zero.

C It is proportional to the displacement from a fixed point.

D It is proportional to the velocity.

11 A particle of mass m strikes a vertical rigid wall perpendicularly from the left with velocity v.

rigid wallvm

If the collision is perfectly elastic, the total change in momentum of the particle that occurs as a result of the collision is

A 2mv to the right.

B 2mv to the left.

C mv to the right.

D mv to the left.

9


12 Which two vector diagrams represent forces in equilibrium?

P Q

R S

A P and Q

B Q and R

C R and S

D S and P

13 A long uniform beam is pivoted at one end. A force of 300 N is applied to hold the beam

horizontally.

0.5 m2.5 m

300 Nbeam

pivot

What is the weight of the beam?

A 300 N B 480 N C 600 N D 960 N

14 An electron is situated in a uniform electric field, as shown in the diagram.

fieldelectron

What is the direction of the electric force acting on the electron?

A downwards

B to the left

C to the right

D upwards

10

© UCLES 2004 9702/01/O/N/04

15 The kinetic energy of a particle is increased by a factor of 4.

By what factor does its speed increase?

A 2 B 4 C 8 D 16

16 A horizontal force of 90 N is used to push a box across a horizontal floor. The frictional force on

the box is 50 N.

What is the gain in kinetic energy of the box when it is moved through a distance of 6.0 m?

A 240 J B 300 J C 540 J D 840 J

17 A cyclist is capable of generating an average power of 3.0 kW during a 4.0 km speed trial. His

aerodynamic suit and position on the cycle reduce resistive forces to 180 N.

What is the approximate time achieved in the speed trial?

A 140 s B 240 s C 1300 s D 2200 s

18 A constant force of 9.0 kN, parallel to an inclined plane, moves a body of weight 20 kN through a

distance of 40 m along the plane at constant speed. The body gains 12 m in height, as shown.

40 m

9.0 kN 12 m

20 kN

How much of the work done is dissipated as heat?

A 120 kJ B 240 kJ C 360 kJ D 600 kJ

19 Which statement applies to the boiling but not to the evaporation of a liquid?

A All the bonds between molecules in the liquid are broken.

B At normal atmospheric pressure, the process occurs at one temperature only.

C Energy must be provided for the process to happen.

D The separation of the molecules increases greatly.

11


20 The diagram shows two liquids, labelled P and Q, which do not mix. The liquids are in equilibrium in an open U-tube.

x

x

x

P

Q

What is the ratio Q ofdensity

P ofdensity ?

A 2

1 B

3

2 C

2

3 D 2

21 Which two substances are normally both crystalline?

A copper and diamond

B copper and glass

C diamond and glass

D diamond and rubber

22 The table shows a load applied to four wires and the cross-sectional area of each.

Which of the wires is subjected to the greatest stress?

load / N cross-sectional

area / mm2

A 1500 0.25

B 2000 1.0

C 3000 0.56

D 5000 2.3

12

© UCLES 2004 9702/01/O/N/04

23 The force F required to extend a sample of rubber by a distance x is found to vary as shown.

F / N

0 1 2 3 4 5

40

30

20

10

0x / m

The energy stored in the rubber for an extension of 5 m is

A less than 100 J.

B 100 J.

C between 100 J and 200 J.

D more than 200 J.

24 Which of the following is a longitudinal wave?

A a light wave travelling through air

B a radio wave from a broadcasting station

C a ripple on the surface of water

D a sound wave travelling through air

25 A stationary sound wave is set up along the line joining two loudspeakers.

Which measurement is sufficient on its own to enable you to deduce the wavelength of the wave?

A the amplitude of the sound wave

B the distance between the two loudspeakers

C the distance between two adjacent antinodes

D the frequency of the sound wave

26 A wave of amplitude 20 mm has intensity IX. Another wave of the same frequency but of

amplitude 5 mm has intensity IY.

What is Y

X

I

I?

A 2 B 4 C 16 D 256

13


27 The diagram represents a stationary wave on a stretched string.

P

x

What is represented by point P and by the length x?

point P length x

A antinode one wavelength

B antinode two wavelengths

C node one wavelength

D node two wavelengths

28 Fringes of separation y are observed on a screen 1.00 m from a Young’s slit arrangement that is

illuminated by yellow light of wavelength 600 nm.

At which distance from the slits would fringes of the same separation y be observed when using blue light of wavelength 400 nm?

A 0.33 m B 0.67 m C 0.75 m D 1.50 m

29 Two parallel, conducting plates with air between them are placed close to one another. The top

plate is given a negative charge and the bottom one is earthed.

Which diagram best represents the distribution of charges and the field in this situation?

A B

C D

+ + + + + + +

_ _ _ _ _ _ _

_ _ _ _ _ _ _

+ + + + + + +

_ _ _ _ _ _ _

_ _ _ _ _ _ _

14

© UCLES 2004 9702/01/O/N/04

30 In a uniform electric field, which statement is correct?

A All charged particles experience the same force.

B All charged particles move with the same velocity.

C All electric field lines are directed towards positive charges.

D All electric field lines are parallel.

31 Which of the following describes the electric potential difference between two points in a wire that

carries a current?

A the force required to move a unit positive charge between the points

B the ratio of the energy dissipated between the points to the current

C the ratio of the power dissipated between the points to the current

D the ratio of the power dissipated between the points to the charge moved

32 The diagram shows four heaters and the current in each.

Which heater has the greatest power dissipation?

8 A2 Ω

6 A4 Ω

4 A6 Ω

2 A8 Ω

A

B

C

D

33 When a potential difference V is applied between the ends of a wire of diameter d and length l ,

the current in the wire is I.

What is the current when a potential difference of 2V is applied between the ends of a wire of the same material of diameter 2d and the length 2l ? Assume that the temperature of the wire remains constant.

A I B 2I C 4I D 8I

15


34 The resistance of a thermistor decreases significantly as its temperature increases.

The thermistor is kept in air. The air is at room temperature.

Which graph best represents the way in which the current I in the thermistor depends upon the potential difference V across it?

A

I

00 V

B

I

00 V

C

I

00 V

D

I

00 V

35 The diagram shows a junction in a circuit where three wires P, Q and R meet. The currents in P

and Q are 1 A and 3 A respectively, in the directions shown.

P1 A

3 A

R

Q

How many coulombs of charge pass a given point in wire R in 5 seconds?

A 0.4 B 0.8 C 2 D 10

16

© UCLES 2004 9702/01/O/N/04

36 The diagram shows a potential divider circuit designed to provide a variable output p.d.

output

5.0 kΩ

5.0 kΩ

9.0 V

Which gives the available range of output p.d?

maximum output minimum output

A 3.0 V 0

B 4.5 V 0

C 9.0 V 0

D 9.0 V 4.5 V

37 In the circuit shown, the ammeters have negligible resistance and the voltmeters have infinite

resistance.

A

V

A

V

I1 I2

V1 V2

3 Ω

6 Ω

2 Ω

2 Ω

The readings on the meters are I1, I2, V1 and V2, as labelled on the diagram.

Which is correct?

A I1 > I2 and V1 > V2

B I1 > I2 and V1 < V2

C I1 < I2 and V1 > V2

D I1 < I2 and V1 < V2

17

© UCLES 2004 9702/01/O/N/04

38 The symbol Ge77

32 represents a nuclide of germanium that decays to a nuclide of arsenic (As)

by emitting a β-particle.

What is the symbol of this arsenic nuclide?

A As76

32 B As

78

32 C As

78

31 D As

77

33

39 The table shows three properties of different types of ionising radiation.

X Y Z

charge 0 –1 e +2 e

mass 0 1840

1u 4 u

speed c ~0.9 c ~0.1 c

What are the radiations X, Y and Z?

X Y Z

A alpha beta X-rays

B gamma alpha beta

C gamma beta alpha

D X-rays alpha beta

40 Which conclusion can be drawn from the results of the experiment showing the scattering of

α-particles by gold foil?

A Electrons orbit the atomic nucleus in well-defined paths.

B Nuclei of different isotopes contain different numbers of neutrons.

C The atomic nucleus contains protons and neutrons.

D The nucleus is very small compared with the size of the atom.


SP (NF/KS) S53605/2© UCLES 2003 [Turn over

CAMBRIDGE INTERNATIONAL EXAMINATIONSGeneral Certificate of Education

Advanced Subsidiary Level and Advanced Level

PHYSICS 9702/01

Paper 1 Multiple ChoiceOctober/November 2003

1 hourAdditional Materials: Multiple Choice Answer Sheet

Soft clean eraserSoft pencil (type B or HB is recommended)


Write in soft pencil.Do not use staples, paper clips, highlighters, glue or correction fluid.Write your name, Centre number and candidate number on the Answer Sheet in the spaces providedunless this has been done for you.

There are forty questions on this paper. Answer all questions. For each question there are four possibleanswers A, B, C, and D.Choose the one you consider correct and record your choice in soft pencil on the separate AnswerSheet.


Each correct answer will score one mark. A mark will not be deducted for a wrong answer.Any rough working should be done in this booklet.

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1 A student measures a current as 0.5 A.

Which of the following correctly expresses this result?

A 50 mA B 50 MA C 500 mA D 500 MA

2 A force of 5 N may be represented by two perpendicular components OY and OX as shown in thediagram, which is not drawn to scale.

OY is of magnitude 3 N.

What is the magnitude of OX?

A 2 N B 3 N C 4 N D 5 N

3 The momentum of an object of mass m is p.

Which quantity has the same base units as ?

A energy

B force

C power

D velocity

4 A thermometer can be read to an accuracy of ±0.5 °C. This thermometer is used to measure atemperature rise from 40 °C to 100 °C.

What is the percentage uncertainty in the measurement of the temperature rise?

A 0.5 % B 0.8 % C 1.3 % D 1.7 %

p2

m

3N 5N

Y

0 X

5

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5 The time-base on a cathode-ray oscilloscope is set at 6 ms / cm.

A trace consisting of two pulses is recorded as shown in the diagram.

What is the time interval between the two pulses?

A 0.42 ms B 0.75 ms C 1.33 ms D 27 ms

6 A micrometer screw gauge is used to measure the diameter of a copper wire.

The reading with the wire in position is shown in diagram 1. The wire is removed and the jaws ofthe micrometer are closed. The new reading is shown in diagram 2.

diagram 1 diagram 2

What is the diameter of the wire?

A 1.90 mm B 2.45 mm C 2.59 mm D 2.73 mm

010

5

015

15 20

10

2.5cm

4.5cm

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7 A car at rest in a traffic queue moves forward in a straight line and then comes to rest again. Thegraph shows the variation with time of its displacement.

What is its speed while it is moving?

A 0.70 ms–1 B 0.80 m s–1 C 1.25 m s–1 D 1.40 m s–1

8 An object is dropped from a great height and falls through air of uniform density.

The acceleration of free fall is g.

Which graph could show the variation with time t of the acceleration a of the object?

9 Which of the following is a statement of the principle of conservation of momentum?

A Momentum is the product of mass and velocity.

B In an elastic collision, momentum is constant.

C The momentum of an isolated system is constant.

D The force acting on a body is proportional to its rate of change of momentum.

a

g

t0

0

a

g

t0

0

a

g

t0

0

a

g

t0

0

A B C D

00 20 40 60 80 100 120 140

10

20

30

40

50

60

70

time/s

displacement/m

7


10 A mass accelerates uniformly when the resultant force acting on it

A is zero.

B is constant but not zero.

C increases uniformly with respect to time.

D is proportional to the displacement from a fixed point.

11 A molecule of mass m travelling horizontally with velocity u hits a vertical wall at right angles to thewall. It then rebounds horizontally with the same speed.

What is its change in momentum?

A zero B mu C –mu D –2mu

12 Two balls X and Y approach each other along the same straight line and collide elastically.

Their speeds are uX and uY respectively. After the collision they move apart with speeds vX and vYrespectively. Their directions are shown on the diagram.

Which of the following equations is correct?

A uX + uY = vX + vY

B uX + uY = vX – vY

C uX – uY = vX + vY

D uX – uY = vX – vY

X

X Y

YuX uY

vX vY

before

after

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13 A spanner is used to tighten a nut as shown.

A force F is applied at right-angles to the spanner at a distance of 0.25 m from the centre of thenut. When the nut is fully tightened, the applied force is 200 N.

What is the resistive torque, in an anticlockwise direction, preventing further tightening?

A 8 N m

B 25 N m

C 50 N m

D 800 N m

14 Two parallel forces, each of magnitude F, act on a body as shown.

What is the magnitude of the torque on the body produced by these forces?

A Fd B Fs C 2Fd D 2Fs

F

F

ds

0.04m

0.25m

F = 200N

9


15 A force F is applied to a freely moving object. At one instant of time, the object has velocity v andacceleration a.

Which quantities must be in the same direction?

A a and v only

B a and F only

C v and F only

D v, F and a

16 A hinged door is held closed in the horizontal position by a cable.

Three forces act on the door: the weight W of the door, the tension T in the cable, and the force Hat the hinge.

Which list gives the three forces in increasing order of magnitude?

A H,T,W B T,H,W C W,H,T D W,T,H

17 A mass is raised vertically. In time t, the increase in its gravitational potential energy is Ep and theincrease in its kinetic energy is Ek.

What is the average power input to the mass?

A (Ep – Ek)t

B (Ep + Ek)t

C

DEp + Ek

t

Ep – Ek

t

wall

doorhingehinge

cable

T

W

H

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18 A boat moving at constant speed v through still water experiences a total frictional drag F.

What is the power developed by the boat?

A 1⁄2Fv B Fv C 1⁄2Fv 2 D Fv 2

19 The graph shows how the pressure exerted by a liquid varies with depth below the surface.

What is the density of the liquid?

A 600 kg m–3 B 760 kg m–3 C 5900 kg m–3 D 7500 kg m–3

20 In an experiment to demonstrate Brownian motion, smoke particles in a container are illuminated by a strong light source and observed through a microscope.

The particles are seen as small specks of light that are in motion.

What causes this motion?

A collisions between the smoke particles and air molecules

B collisions between the smoke particles and the walls of the container

C convection currents within the air as it is warmed by the light source

D kinetic energy gained by the smoke particles on absorption of light

00 0.1 0.2 0.3 0.4

500

1000

1500

2000

2500

3000

depth/m

pressure/Pa

11


21 What is the Young modulus of a metal?

A extension / force

B force / extension

C strain / stress

D stress / strain

22 The graph shows how the extension of a spring varies with the force used to stretch it.

What is the strain energy stored in the spring when the extension is 4.0 cm?

A 60 J B 120 J C 600 J D 1200 J

23 The graph shows how the displacement of a particle in a wave varies with time.

Which of the following is correct?

A The wave has an amplitude of 2 cm and could be either transverse or longitudinal.

B The wave has an amplitude of 2 cm and must be transverse.

C The wave has an amplitude of 4 cm and could be either transverse or longitudinal.

D The wave has an amplitude of 4 cm and must be transverse.

time/s

1

2

2 4 6

–1

–2

0

displacement/cm

2.0

4.0

00 10 20 30

force/kN

extension/cm

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24 A stationary sound wave has a series of nodes. The distance between the first and the sixth nodeis 30.0 cm.

What is the wavelength of the sound wave?

A 5.0 cm B 6.0 cm C 10.0 cm D 12.0 cm

25 Which of the following applies to a progressive transverse wave?

26 Which of the following may be used to produce stationary waves?

A blowing air over the top of an empty bottle

B making a loud sound near a mountain

C passing monochromatic light through a double slit

D passing water waves through a narrow slit

27 In an interference experiment, two slits are illuminated with white light.

What is seen on the screen?

A The central fringe is black with black and white fringes on each side.

B The central fringe is black with coloured fringes on each side.

C The central fringe is white with black and white fringes on each side.

D The central fringe is white with coloured fringes on each side.

white lightsource

slits screen

transfers energy can be polarised

A no no

B no yes

C yes no

D yes yes

13


28 Microwaves of wavelength 3.00 cm are incident normally on a row of parallel metal rods. Theseparation of the rods is 8.00 cm. The first order diffraction maximum is observed at an angle of22.0° to the direction of the incident waves.

What is the angle between the first and second order diffraction maxima?

A 22.0° B 26.6° C 44.0° D 48.6°

29 Which electrical quantity would be the result of a calculation in which energy is divided by charge?

A current

B potential difference

C power

D resistance

30 A wire carries a current of 2.0 amperes for 1.0 hour.

How many electrons pass a point in the wire in this time?

A 1.2 × 10–15

B 7.2 × 103

C 1.3 × 1019

D 4.5 × 1022

31 The diagram shows a circuit in which the battery has negligible internal resistance.

What is the value of the current I ?

A 1.0 A B 1.6 A C 2.0 A D 3.0 A

3.0 Ω

6.0 Ω2.0 Ω

12 V

I

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32 The diagram shows currents I1, I2, I3, I4 and I5 in different branches of a circuit.

Which one of the following is correct?

A I1 = I2 + I3

B I2 = I1 + I3

C I3 = I4 + I5

D I4 = I5 + I3

33 Which diagram shows a potential divider circuit that can vary the voltage across the lamp?

I1

I4 I5

I2

I3

A B C D

15


34 The diagram shows two circuits. In these circuits, only the internal resistances differ.

Which line in the table is correct?

35 Which diagram represents the electric field of a negative point charge –q?

36 A potential difference V is applied between two parallel plates a small distance d apart, andproduces an electric field of strength E between the plates.

What is the electric field strength between the plates when both V and d are doubled?

A E / 4 B E C 2E D 4E

dV

–q –q

–q –q

A B C D

3.0 Ω

circuit X

0.5 Ω1.5 V

3.0 Ω

circuit Y

2.0 Ω1.5 V

potential difference power dissipatedacross 3.0 Ω resistor in 3.0 Ω resistor

A greater in X than in Y less in X than in Y

B greater in X than in Y greater in X than in Y

C less in X than in Y less in X than in Y

D less in X than in Y greater in X than in Y

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37 In the circuit below, the distance between the two parallel plates is 2.0 × 10–3 m. An electron issituated between the plates.

What is the force on the electron?

A 3.2 × 10–22 N

B 2.9 × 10–21 N

C 8.9 × 10–18 N

D 7.2 × 10–16 N

38 Which are the correct descriptions of a γ-ray and a β-particle?

39 A certain nuclide, Uranium-235, has nucleon number 235, proton number 92 and neutron number143. Data on four other nuclides are given below.

Which is an isotope of Uranium-235?

9V

γ-ray β-particle

A high-speed electron electromagnetic radiation

B electromagnetic radiation Helium-4 nucleus

C electromagnetic radiation high-speed electron

D high-speed electron Helium-4 nucleus

nucleon number proton number neutron number

A 235 91 144

B 236 92 144

C 237 94 143

D 238 95 143

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40 A nickel nucleus 5928Ni can be transformed by a process termed K-capture. In this process the

nucleus absorbs an orbital electron.

If no other process is involved, what is the resulting nucleus?

A 5828Ni B 58

27Co C 5927Co D 59

29Cu

TIME 1 hour

INSTRUCTIONS TO CANDIDATES

Do not open this booklet until you are told to do so.

Write your name, Centre number and candidate number on the answer sheet in the spaces providedunless this has already been done for you.

There are forty questions in this paper. Answer all questions. For each question, there are fourpossible answers, A, B, C and D. Choose the one you consider correct and record your choice in softpencil on the separate answer sheet.

Read very carefully the instructions on the answer sheet.

INFORMATION FOR CANDIDATES



CAMBRIDGE INTERNATIONAL EXAMINATIONS

General Certificate of Education Advanced Subsidiary Leveland Advanced Level

PHYSICS 9702/1PAPER 1 Multiple Choice

OCTOBER/NOVEMBER SESSION 20021 hour

Candidates answer on the question paper.Additional materials:

Multiple Choice answer sheetSoft clean eraserSoft pencil (Type B or HB is recommended)

This question paper consists of 19 printed pages and 1 blank page.

SPA (CW/CG) S21713/3© CIE 2002 [Turn over

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1 The prefix ‘centi’ indicates x 10–2. That is, 1 centimetre is equal to 1 × 10–2 metre.

Which line in the table correctly indicates the prefixes micro, nano and pico?

2 A particle is moving in a straight line with uniform acceleration.

Which graph represents the motion of the particle?

3 A pendulum bob is held stationary by a horizontal force H. The three forces acting on the bob areshown in the diagram.

The tension in the string of the pendulum is T. The weight of the pendulum bob is W.


A H = T cos30° B T= H sin30° C W = T cos30° D W = T sin30°

30°

H

T

W

distance

time

A

00

velocity

time

B

00

velocity

time

C

00

acceleration

time

D

00

×10–12 ×10–9 ×10–6

A nano micro pico

B micro pico nano

C pico nano micro

D pico micro nano

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4 What is meant by the weight of an object?

A the gravitational field acting on the object

B the gravitational force acting on the object

C the mass of the object multiplied by gravity

D the object’s mass multiplied by its acceleration

5 A student carries out a series of determinations of the acceleration of free fall g. The table showsthe results.

What can be said about this experiment?

A It is accurate and precise.

B It is accurate but not precise.

C It is not accurate and not precise.

D It is not accurate but is precise.

[Turn over

g/ms–2

4.91

4.89

4.88

4.90

4.93

4.92

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6 A quantity X is measured many times. A graph is plotted showing the number n of times aparticular value of X is obtained. X has a true value X 0.

Which graph could be obtained if the measurement of X has a large systematic error but a smallrandom error?

7 The diagram shows a square-wave trace on the screen of a cathode-ray oscilloscope. A grid of 1 cm squares covers the screen. The time-base setting is 10 ms cm–1.

What is the approximate frequency of the square-wave?

A 70 Hz B 140 Hz C 280 Hz D 1400 Hz

C D

BA

n n

0 X 0 X 0X X0

00

n

X 0 X00

n

X 0 X00

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8 A projectile is launched at point O and follows the path OPQRS, as shown. Air resistance may beneglected.

Which statement is true for the projectile when it is at the highest point Q of its path?

A The horizontal component of the projectile’s acceleration is zero.

B The horizontal component of the projectile’s velocity is zero.

C The kinetic energy of the projectile is zero.

D The momentum of the projectile is zero.

9 Two markers M1 and M2 are set up a vertical distance h apart.

When a steel ball is released from rest from a point a distance x above M1, it is found that the balltakes time t1 to reach M1 and time t2 to reach M2.

Which expression gives the acceleration of the ball?

A B C D2h

––––––(t2

2 – t12)

2h––––––(t2 – t1)2

2h–––––(t2 + t1)

2h––t2

2

time zero

time t 1

steel ball

time t 2

M1

h

x

M 2

PQ

O S

R

[Turn over

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10 A body falls from rest in a vacuum near the Earth’s surface. The variation with time t of its speed vis shown below.

Which graph shows the variation with time t of the speed v of the same ball falling in air at thesame place on Earth?

0

A

v

t00

B

v

t0

0

D

v

t00

C

v

t0

0

v

t0

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11 Two spheres A and B approach each other along the same straight line with speeds uA and uB.The spheres collide and move off with speeds vA and vB, both in the same direction as the initialdirection of sphere A, as shown below.

Which equation applies to an elastic collision?

A uA + uB = vB – vA

B uA – uB = vB – vA

C uA – uB = vB + vA

D uA + uB = vB + vA

12 Two equal masses travel towards each other on a frictionless air track at speeds of 60 cm s–1 and30 cm s–1. They stick together on impact.

What is the speed of the masses after impact?

A 15 cm s–1 B 20 cm s–1 C 30 cm s–1 D 45 cm s–1

13 Which of the following pairs of forces, acting on a circular object, constitutes a couple?

A

F

F

FF F

F

2F

2F

DB C

60 cm s–1 30 cm s–1

A

before collision

after collision

B

uA uB

vA vB

[Turn over

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14 A uniform metre rule of mass 100 g is supported by a knife-edge at the 40 cm mark and a string atthe 100 cm mark. The string passes round a frictionless pulley and carries a mass of 20 g asshown in the diagram.

At which mark on the rule must a 50 g mass be suspended so that the rule balances?

A 4 cm B 36 cm C 44 cm D 96 cm

15 The diagrams represent systems of coplanar forces acting at a point. The lengths of the forcevectors represent the magnitudes of the forces.

Which system of forces is in equilibrium?

16 Which of the following is an expression for power?

A energy x time

B force x displacement

C force x velocity

D mass x velocity

A B C D

0 20 40 60 80 100

20 g

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17 A car driver adjusts the pressure on a car’s brakes so that the car travels at constant speed downa hill from P to Q.

The magnitude of the change in the car’s kinetic energy is ∆Ek. The magnitude of the change in itsgravitational potential energy is ∆Ep.


A ∆Ek > ∆Ep B ∆Ek = ∆Ep C ∆Ep > ∆Ek > 0 D ∆Ek = 0

18 An area of land is an average of 2.0 m below sea level. To prevent flooding, pumps are used to liftrainwater up to sea level.

What is the minimum pump output power required to deal with 1.3 × 109 kg of rain per day?

A 15 kW B 30 kW C 150 kW D 300 kW

19 A twig from a tree drops from a 200 m high cliff on to a beach below. During its fall, 40% of thetwig’s energy is converted into thermal energy.

What is the speed with which the twig hits the beach?

A 35 m s–1 B 40 m s–1 C 49 m s–1 D 63 m s–1

20 Pollen grains are suspended in a liquid and are illuminated strongly. When observed under amicroscope they are seen to be in continuous random motion.

What is the reason for this?

A convection currents in the liquid

B evaporation of the liquid

C molecules of the liquid colliding with the pollen grains

D pollen grains colliding with each other

P

Q

[Turn over

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21 At a depth of 20 cm in a liquid of density 1800 kg m–3, the pressure due to the liquid is p.

Another liquid has a density of 1200 kg m–3.

What is the pressure due to this liquid at a depth of 60 cm?

A B C 2p D 3p

22 Which line in the table gives approximate ratios of density and molecular spacing for a substancein its solid, liquid and gas phases?

23 The variation of the extension x of a spring with applied force F is shown.

Which shaded area represents the work done when the extension is increased from x1 to x2?

F

A B C D

xx1 x2 x1 x2 x1 x1x2 x200

F F

0x0

F

0x0

00 x

F

x00

3p––2

p–2

density molecular spacing

solid : liquid : gas solid : liquid : gas

A 1000 : 1000 : 1 1 : 1 : 10

B 1000 : 100 : 1 1 : 10 : 1000

C 1000 : 1000 : 1 1 : 1 : 1000

D 1000 : 100 : 1 1 : 10 : 100

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24 Two springs P and Q both obey Hooke’s law. They have spring constants 2k and k respectively.

The springs are stretched, separately, by a force that is gradually increased from zero up to acertain maximum value, the same for each spring. The work done in stretching spring P is WP,and the work done in stretching spring Q is WQ.

How is WP related to WQ?

A WP = WQ B WP = WQ C WP = 2WQ D WP = 4WQ

25 Which value is a possible wavelength for radiation in the microwave region of the electromagneticspectrum?

A 3 × 10–2 m B 3 × 10–5 m C 3 × 10–8 m D 3 × 10–10 m

26 The four graphs represent a progressive wave on a stretched string. Graphs A and B show howthe displacement d varies with distance x along the string at one instant. Graphs C and D showhow the displacement d varies with time t at a particular value of x.

The labels on the graphs are intended to show the wavelength λ, the period T, and the amplitudea of the wave, but only one graph is correctly labelled.

Which graph is correctly labelled?

00

00

T

A B

DC

a

a

a

a

T tt

λ

λ

d

00

d

d

00

d

xx

[Turn over

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27 A wave of amplitude a has an intensity of 3.0 Wm–2.

What is the intensity of a wave of the same frequency that has an amplitude 2a?

A 4.2 Wm–2 B 6.0 Wm–2 C 9.0 Wm–2 D 12 Wm–2

28 Coherent monochromatic light illuminates two narrow parallel slits and the interference patternthat results is observed on a screen some distance beyond the slits.

Which change increases the separation between the dark lines of the interference pattern?

A using monochromatic light of higher frequency

B using monochromatic light of a longer wavelength

C decreasing the distance between the screen and the slits

D increasing the distance between the slits

29 Monochromatic light of wavelength 590 nm is incident normally on a diffraction grating. The anglebetween the two second-order diffracted beams is 43°.

What is the spacing of the lines on the grating?

A 0.87 µm B 1.6 µm C 1.7 µm D 3.2 µm

30 Which equation is used to define resistance?

A power = (current)2 × resistance

B resistivity = resistance × area ÷ length

C potential difference = current × resistance

D energy = (current)2 × resistance × time

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31 The graph shows how the current through a lamp filament varies with the potential differenceacross it.

Which statement explains the shape of this graph?

A As the filament temperature rises, electrons can pass more easily through the filament.

B It takes time for the filament to reach its working temperature.

C The power output of the filament is proportional to the square of the current through it.

D The resistance of the filament increases with a rise in temperature.

00 p.d.

current

[Turn over

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32 The variation with potential difference V of the current I in a semiconductor diode is shown below.

What is the resistance of the diode for applied potential differences of +1.0 V and –1.0 V?

0

0-1.0

-50

1.0 2.0

I / mA50

-2.0V/V

resistance

at +1.0 V at –1.0 V

A 20Ω infinite

B 20Ω zero

C 0.05Ω infinite

D 0.05Ω zero

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33 At a circuit junction, a current I divides into currents I1, I2 and I3.

These currents are related by the equation

I = I1 + I2 + I3.

Which law does this statement illustrate and on what principle is the law based?

A Kirchhoff’s first law based on conservation of charge

B Kirchhoff’s first law based on conservation of energy

C Kirchhoff’s second law based on conservation of charge

D Kirchhoff’s second law based on conservation of energy

34 The combined resistance RT of two resistors of resistances R1 and R2 connected in parallel isgiven by the formula

= +

Which statement is used in the derivation of this formula?

A The currents through the two resistors are equal.

B The potential difference across each resistor is the same.

C The supply current is split between the two resistors in the same ratio as the ratio of theirresistances.

D The total power dissipated is the sum of the powers dissipated in the two resistors separately.

1––R2

1––R1

1––RT

I

I1

I2

I3

[Turn over

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35 In the potentiometer circuit below, the moveable contact is placed at N on the bare wire XY, suchthat the galvanometer shows zero deflection.

The resistance of the variable resistor is now increased.

What is the effect of this increase on the potential difference across the wire XY and on theposition of the moveable contact for zero deflection?

36 Six resistors, each of resistance 5 Ω, are connected to a 2 V cell of negligible internal resistance.

What is the potential difference between terminals X and Y?

A V B V C V D 2 V

5 Ω

5 Ω

5 Ω

5 Ω2 V

X

Y

5 Ω

5 Ω

NYX

potential difference across XY position of moveable contact

A increases nearer to X

B increases nearer to Y

C decreases nearer to X

D decreases nearer to Y

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37 Which diagram shows the electric field pattern of an isolated negative point charge?

38 The numbers of protons, neutrons and nucleons in three nuclei are shown.

Which nuclei are isotopes of the same element?

A X and Y B X and Z C Y and Z D none of them

39 In an experiment to investigate the nature of the atom, a very thin gold film was bombarded with α-particles.

What pattern of deflection of the α-particles was observed?

A A few α-particles were deflected through angles greater than a right angle.

B All α-particles were deflected from their original path.

C Most α-particles were deflected through angles greater than a right angle.

D No α-particle was deflected through an angle greater than a right angle.

40 When a nucleus of 23892 U absorbs a slow neutron it subsequently emits two β-particles.

What is the resulting nucleus?

A 24093 Np B 240

91 Pa C 23994 Pu D 239

90Th

– –––

BA C D

nucleus number of number of number ofprotons neutrons nucleons

X 15 16 31

Y 15 17 32

Z 16 16 32

20

9702/1/O/N/02

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