2009 HKCEE Physics Mock Exam Paper 2 - Set 1

8/15/2019 2009 HKCEE Physics Mock Exam Paper 2 - Set 1

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CE-PHY-MK3-09b

HKCEE PHYSICS

2009 HKCEE Physics Mock Exam Paper 2

Set 1

Prepared by Andy Lai

Enrollment Hotline: 6772 3001 Website: www.andylai.hk MSN: [email protected]: Rm706, Prosper Commercial Building, 9 Yin Chong Street, Mong Kok, Kowloon, Hong Kong.

Do you think you understand the following

topics thoroughly? Do this challenging paper

to test yourself!

1. Heat

2. Mechanics

3. Waves4. Electricity and Magnetism

5. Radioactivity


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2008 HKCEE Physics Mock Exam Paper 2 – Set 3

M.C. Answers:

1. B 2. B 3. B 4. A 5. *C

6. C 7. A 8. D 9. C 10. B

11. B 12. D 13. D 14. D 15. C

16. C 17. A 18. B 19. B 20. D

21. A 22. A 23. C 24. C 25. A

26. B 27. B 28. B 29. *C 30. *C31. A 32. A 33. D 34. A 35. A

36. A 37. B 38. B 39. D 40. D

41. D 42. D 43. C 44. C 45. A

*Updated!


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sir CE-PHY-MK3-08b

2008 HKCEE Physics Mock Exam Set 3 – Paper 2

©2007 A Lai l ear ni ng Cent er . ALL RIGHTS RESERVED.www.andylai.hk Prepared by Andy Lai

P. 1

Take2

10 −

= msg .

Unless otherwise specified, all cells are assumed to have negligible internal resistance.

1.

A chocolate is dropped into a cylinder of syrup. Which of the following correctly describes its

motion before the terminal speed is reached?

Magnitude of its velocity Magnitude of its acceleration

A. Increase Increase

B. Increase Decrease

C. Increase 102−

ms

D. remain unchanged 210 −ms

2.

When given a slight push, a toy car moves freely with constant velocity down a plane inclined

at 30o to the horizontal. If the mass of the car is 1 kg, what is the minimum force to pull the

car up the same plane with constant velocity.

A. 5 N

B. 10 NC. 15 N

D. 20 N


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P. 2

3.

Two small cannon A and B of masses 1 kg and 2 kg respectively are released from rest at

heights 2h and h above the ground respectively. Which of the following statements is/are

correct ? (Assume air resistance is negligible)

(1) The acceleration of sphere A doubles that of sphere B.

(2) The separation between sphere A and sphere B will increase as they are falling down to

the ground.

(3) The kinetic energy of sphere A when reaching the ground is the same of that of sphere B.

A. (1) only

B. (3) only

C. (2) and (3) only

D. None of the above

4.

Which of the following pairs of quantities of a moving object must be in the same direction ?

(1) acceleration and change in momentum

(2) displacement and velocity

(3) velocity and acceleration

A. (1) only

B. (1) and (2) only

C. (2) and (3) only

D. None of the above


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P. 3

5.

In a diving competition, Andy jumps vertically upward from a 10-meter stage and experiences

an air resistance opposing its motion with magnitude proportional to its speed. Which of the

following graphs best represents the variation of Andy’s acceleration with time, t, starting

from the moment when Andy leaves the 10-metre stage to the time when it get into the water?

(Take downward as positive.)

A.

B.

C.

D.

6.Two small identical objects P and Q are released from rest from the top of a building 80 m

above the ground. Q is released 1 second after P. Neglecting air resistance, what is the

maximum vertical separation between P and Q in the air?

A. 5 meters

B. 10 meters

C. 35 meters

D. 45 meters


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P. 4

7.

A light spring is fixed to a block Q which rests on a horizontal surface as shown. Block P is

moving with constant velocity towards Q and makes a head-on elastic collision with Q. After

the collision, P reverses its direction of motion, while Q moves to the right. All contact surfaces

are smooth. When will the spring be under a state of maximum compression?

A. When the two blocks move with the same velocity.

B. When block P is momentarily at rest.

C. When block P starts to reverse its direction of motion.

D. When block Q starts to move to the right.

8.

If a body is at rest at this moment, then

A. the resultant force acting on the body must be zero.

B. the acceleration of the body must be zero.

C. the body must remain at rest forever unless there is an external force acting on it.D. The momentum of the body must be zero.


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P. 5

9.

If a car is starting from rest and its a-t graph is as shown above. What is the velocity after 5

seconds?

A.1

5 −

ms

B.1

10 −

ms

C.1

25 −

ms

D.1

50 −

ms

10.

A truck of mass 1000 kg and a driver of mass 100 kg can accelerate to 100 km per hour within

5 seconds. After picking up a 1000 kg of load of bricks, it takes 10 seconds. Assuming theengine exerts the same force, the driver can deduce that

(I) he was cheated and did not get 1000 kg of bricks.

(II) he got too many bricks.

(III) he has exactly 1000 kg of bricks.

(IV) he initially drove uphill, but now he is driving downhill.

A. (I) onlyB. (II) only

C. (II) and (IV) only

D. (IV) only


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P. 6

11.

A baseball player crushes a home run deep over the far wall. The baseball bat

A. exerts a greater force on the baseball than the baseball does on it.

B. exerts exactly the same force on the baseball as the baseball does on it.

C. Has no force exerted on it by the baseball, only by the player’s arms.

D. It is impossible to determine which exerted the greater force.

12.

A monkey swings from a vine from one branch to another. The monkey’s greatest total energy

occurs

A. at the top of the swing’s arc.

B. at the bottom of the swing’s arc.

C. halfway up the swing’s arc.

D. All of the above.


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P. 7

13.

A 900 kg elevator accelerates at 1 meter per second upwards. The total power required of the

elevator motor is

A. 900 W

B. 9000 W

C. constantly decreasing

D. constantly increasing

14.

A bungee jumper jumps from a bridge (height h = 0) down into a deep ravine. Her position

and velocity are correctly given by

A. both the graph above.

B. graph I only.

C. graph II only.D. neither graph.


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P. 8

15.

A copper block and a steel block each have the same mass. The copper block is at higher

temperature than the steel block. The blocks are placed in thermal contact and they then

reach thermal equilibrium. There is no energy exchange with the surroundings. How do the

magnitude of the change in temperature T ∆ and the magnitude of the change in internal

energy U ∆ of the two blocks compare? (Assuming the copper block and the steel block do

not change state.)

T ∆ U ∆

A. Same Same

B. Same Different

C. Different Same

D. Different Different

16.

A block of metal at a temperature of 90 degree Celsius is placed in a beaker of water at a

temperature of zero degree Celsius. The mass of the metal block and the mass of the water are

equal. The final temperature of the water and the metal block is 9 degree Celsius. Which of

the following is the best estimate of the ratio of the specific heat capacity of water to the

specific heat capacity of metal?

A. 1 : 10

B. 1 : 9

C. 9 : 1

D. 10 : 1


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P. 9

17.

Two objects X and Y are made of the same material. Object X is more massive than object Y.

Both objects are at the same temperature. Which of the following correctly compares the

average kinetic energy and also the total energy of the molecules in the objects?

Average kinetic energy of

the molecules in X and Y

Total energy of the molecules

in X and Y.

A. Same Greater in X than in Y

B. Same Less in X than in Y

C. Greater in X than in Y Same

D. Less in X than in Y Same

18.

A metal can containing water is heated using a heating coil as shown below.

The water is boiling at a constant rate. The mass of water boiled away per unit time is M1 fora heater power P1. When the heater power is increased to P2, the mass boiled away per unit

time is M2. Heat losses to the atmosphere are not negligible. Which of the following

expressions gives the specific latent heat of vaporization of the water?

A. (P2 + P1) / (M2 + M1)

B. (P2 – P1) / (M2 – M1)

C. P2 / M2

D. P1 / M1


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P. 11

21.

A transverse traveling wave has amplitude 2cm and wavelength 1cm. The distance between a

crest and its neighbouring trough, measured in the direction of energy transfer of the wave is

equal to

A. 0.5 cm

B. 1 cm

C. 2 cm

D. 4 cm

22.

The diagram below shows plane wavefronts of a wave that is approaching the boundary

between two media, X and Y. The speed of the wave is greater in medium X than in medium Y.

The wave crosses the boundary.

Which of the following diagram is correct?


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P. 12

23.

Which of the following is the possible combination of the order of magnitude of frequency and

wavelength of EM wave in air?

Type of EM wave frequency wavelength

A. Radio wave16

10 8

10−

B. X-ray10

10 2

10−

C. Microwave11

10 3

10−

D. Gamma ray21

10 12

10−

24.

A light ray travels from medium I to medium IV as shown above. Which medium has the

largest refractive index?

A. I

B. II

C. III

D. IV


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P. 13

25.

What conclusion can we draw on the wavelength of red light and blue light from the above

diffraction pattern?

Blue light Red light

A. The wavelength of blue light is shorter than the wavelength of red light.

B. The wavelength of red light is shorter than the wavelength of blue light.

C. The frequency of red light is less than the frequency of blue light.

D. The frequency of blue light is longer than the frequency of red light.

26.

Which of the following statements about lens is/are correct?

(I) Convex lens always gives virtual image.

(II) Concave lens always gives virtual image.

(III) Virtual image formed by lens cannot be photographed by digital camera.

A. (I) only

B. (II) onlyC. (I) and (II) only

D. (II) and (III) only


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P. 14

27.

Which of the following statements about sound wave is correct?

A. The louder the voice, the greater the wavelength of the sound wave in air.

B. The higher the pitch of the voice, the smaller the wavelength of the sound wave in air.

C. The frequency of overtones of a musical note is at least half of its fundamental frequency.

D. You can distinguish between Andy Lau’s voices and Andy Lai’s voices singing the same

song with same pitch and loudness because their voice have the same quality.

28.

In the diagram above, F and F’ are foci of the lens and an arrow locates around 2F’. Which of

the following diagram shows the correct image?

A.

B.

C.

D.


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P. 15

29.

A light conducting sphere is hanged from a long insulating thread between oppositely charged

metal plates connected to a high voltage supply. If the sphere is given a positive charge, it will

A. move to the positive plate and stick to it.

B. move to the negative plate and stick to it.

C. oscillate, touching each plate in turn, beginning with the negative plate.

D. oscillate, touching each plate in turn, beginning with the positive plate.

30.

Which graph best represents the relationship between the current I and the voltage V of a

filament lamp?

A. B.

C. D.


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P. 16

31.

Which one of the following is a fundamental unit?

A. Coulomb

B. Ohm

C. Volt

D. Ampere

32.

The figure above shows a charged parallel plate capacitor. P is a point between the plates and

its distance from plate A is x. If E is the electric field at point P, which of the following graphs

best represents the variation of E with x ? (The separation of the plates is s.)

A. B.

C. D.


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P. 17

33.

The graph shows the current-voltage (I-V) characteristic of an electrical component. What is

the resistance of the component at a potential difference1

V and how does the resistance

change, if at all, between potential differences0

V and1

V .

Resistance at1

V Change between0

V and1

V

A.1

01

I

V V − No Change

B.1

01

I

V V − Decreases

C.1

1

I

V No change

D.1

1

I

V Decreases

34.

A battery is connected in series with a resistor R. The battery transfers 2000 C of charge

completely round the circuit. During this process, 2500 J of energy is dissipated in the resistor

R and 1500 J is expended in the battery. The e.m.f. of the battery is

A. 2.00 V

B. 1.25 VC. 0.75 V

D. 0.50 V


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P. 18

35.

Two insulated uncharged metal sphere X and Y are in contact with each other. A negatively

charged rod is brought near X without any contact while sphere X is earthed as shown. At

steady state, which of the following description is/are correct?

(1) Sphere X loses electrons.

(2) Sphere Y gain electrons.

(3) Sphere X acquires a negative electric potential.

(4) Sphere Y acquires a positive electric potential.

A. (1) only

B. (1) and (2) only

C. (1) and (3) only

D. (2) and (4) only

36.

A conducting ball is suspended between two metal plates connected through a sensitive

centre-zero galvanometer to a source of high p.d. The ball shuttles back and forth between the

plates, making alternate contacts with each plate. Which of the following statements is/are

correct ?

(1) The ball carries charges, sometimes positive, and sometimes negative.(2) If the separation of the metal plates decreases, the frequency of oscillation of the ball

increases.

(3) The galvanometer shows a current flowing always in the same direction.

A. (1), (2) and (3) are all correct

B. (1) and (2) only are correct

C. (2) and (3) only are correct

D. (1) only is correct


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P. 19

37.

The e.m.f. of a battery with internal resistance is equal to

(1) the total electrical power it generates divided by the current it delivers.

(2) the total electrical energy it releases, per coulomb of charge when connected to an

external circuit.

(3) the potential difference across its terminals when it is on a closed circuit.

A. (1), (2) and (3)

B. (1) and (2) only

C. (2) and (3) only

D. (1) only

38.

In the circuit above, the equivalent resistance across XY is

A. 0

B. 10

C. 20

D. 40


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P. 20

39.

In the above circuit, the battery has negligible internal resistance. The current I is

A. 2/3 A

B. 1 A

C. 4/3 A

D. 6 A

40.

Two long, straight, parallel conducting wires P and Q are positioned as shown. The same

current flows through both wires and is directed into the plane of the paper. Points A, B and Con the plane of the paper are equidistant from both wires where C is the mid-point between

the wires. Which of the following statements is/are correct?

(1) The magnetic field strength at C is greater that that at A.

(2) The directions of the magnetic field at A and at B are the same.

(3) The magnetic field strength at B will increase if the current flowing in the wires

increases.

A. (1) only

B. (3) only

C. (1) and (2) only

D. (2) and (3) only


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P. 22

43.

The above diagram shows a step-down voltage transformer. Which of the following is/are

correct?

(1) The dotted line indicates the path of the eddy current.

(2) If the terminals of the secondary coil are shorted, the primary current will increase.

(3) The number of turns in the primary is higher than that of the secondary.

A. (1), (2) and (3)

B. (1) and (2) only

C. (2) and (3) only

D. (1) only (3) only

44.A radioactive source consists of

121064× atoms of nuclide A of half-life 2 days. Another

source consists of12

1016× atoms of nuclide B of half-life 3 days. After how long will the

number of active nuclei in the two sources be equal? (Assume that the daughter nuclides of

both A and B are stable.)

A. 6 days

B. 9 days

C. 12 daysD. 18 days


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P. 23

45.

Some typical radiation doses are tabulated as follows:

Radiation dose

Watching Television 0.005 mSv/hr for watching every day in a year

Flying in an aircraft 0.001 mSv/hr

X-ray check 0.020 mSv each time

Arrange the following in ascending order of total radiation dose in one year.

(1) Watching television for 18 hours every day

(2) Travelling on an aircraft for 10 hours every month

(3) Taking X-ray check every 3 months

A. (3), (1), (2)

B. (1), (2), (3)

C. (2), (3), (1)

D. (1), (3), (2)

The End.


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數 / 理 / / / / : 黎 sir BEng (Hons, CUHK)

/

:

狀

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Oral English: Mr. Hugo Ma Native English Speaker

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2009 HKCEE Physics Mock Exam Paper 2 - Set 1

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