Objectice-Physics Part I

8/12/2019 Objectice-Physics Part I

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Geometrical Optics

1. A lens is a piece of __________ material that can focus a transmitted beam of

light.

2. A lens is a piece of transparent material that can focus a __________ beam oflight.

3. A lens is usually bounded by two __________ surfaces.

4. Lenses fall into __________ categories.

. A con!e" lens is thic#er in the middle and __________ on the edges.

$. A con!e" lens is __________ in the middle and thinner on the edges.

%. A con!e" lens __________ the light rays towards its optical a"is.

&. A con!e" lens con!erges the light rays towards its __________.

'. A con!e" lens is thinner in the middle and __________ on the edges.

1(. A di!erging lens is __________ in the middle and thic#er on the edges.11. A conca!e lens __________ the light rays from its optical a"is.

12. A di!erging lens bends light rays from its __________.

13. )he point to which the light rays are brought to focus is called __________.

14. )he point to which the light rays are brought to __________ is called principal

focus.

1. )he distancebetween the optical centre of the lens and its principle focus is

called __________.

1$. )he distance between the __________ of the lens and its principle focus is

called its focal length.

1%. )he point is the lens through which the light rays will pass without any de!iation

is called its __________.

1&. )he point is the lens through which the light rays will pass without any de!iation

is called its __________.

1'. *n +on!e" lens, when the ob-ect is placed in between and 2 then its image will

form __________ on the other side of the lens.

2(. +on!entionally the focal length of the di!erging lens is ta#en as __________.

21. /hen the two lenses are combined to form a single lens, then this lens is called__________ lens.

22. )he defect in the lens is due to the fact that the focal points of the light rays

far from the optical a"is of a spherical lens are different from those rays passing

through the centre is called __________.

23. +hromatic aberration can be reduced to a greater e"tent by the combination of


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__________ lenses.

24. )he angle subtended by the ob-ect at the eye is called __________.

2. )he least distance up to which a normal person could see the ob-ect without

ta#ing any strain on his eyes is called least distance of __________.

2$. +ompoundmicroscopeis an optical de!ice, which is used to see the __________ob-ect with !ery high magnification.

2%. *n compound microscope an eyepiece of __________ focal length is used.

2&. *n compound microscope to obtain the large magnification lenses of __________

focal length are used.

2'. *n compound microscope the eyepieces will be used as a __________.

3(. )elescopeis used to see __________ ob-ect.

31. )he focal length of the ob-ecti!e in astronomical telescope is __________ than

the focal length of eyepiece.

32. Galilean telescope is used to see the ob-ect on __________.

33. *n Galilean telescope the con!e" lens will be used as an __________.

34. )errestrial telescope consists of __________ lenses.

3. *n spectromter, collimeter produces a __________ beam of light.

3$. )he spectrum of light in which the images o!erlap each other is called

__________ spectrum.

3%. )he front of eye is co!ered by a transparent membrane called __________.

3&. )he abnormality in which the image of the distant ob-ect is focused in from of

retina is called __________.

3'. *n the case of the abnormality named as 0yopia the person is said to

__________.

4(. hort ightedness can be corrected by using a __________ a lens.

)he cope of hysics

1. hysical sciences and biological sciences are the two branches of

__________.

2. )he branch of physics, which dealswith the interaction of matter andenergy, is called __________.

3. *bneina was famous in the field of __________.

4. 0edical te"t boo#Alannunil)ib was written by __________.

. *n +.G. system the unit of force is __________.

$. 5nit of luminous intensity is __________.


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%. 6imension of !olume is __________.

&. 6imension of linear momentum is __________.

'. 1$.% contain __________ significant figures.

1(. Logarithm was in!ented by __________.

11. )he biological science deals with __________.

12. )he classof science, which deals with the properties and beha!iour of

nonli!ing matter is called __________ science.

13. +hinese for the first time manufactured __________.

14. 7gyptian used to measure the flood le!el in the ri!er __________.

1. )he people of 7uphrate and )igris !alleys were aware of calendar and had

the #nowledge of __________.

1$. )he people of indus !alley were pioneers of __________ system.

1%. )here are two main branches of physics, namely classical physics and

__________ physics.

1&. )he founder of analytical algebra was __________.

1'. )he author of Alshhifa was __________.

2(. A high precision de!ice for measuring the time with tremendously large

accuracyis the __________.

21. __________ is the unit of thermodynamic temperature.

22. Ampere is the unit of __________.

23. __________ is the amount of substance of a system which contain as

many elementary entities as there are atom in (.(12#g of carbon 12.

24. )he word dimension is used to denote the __________ of a physical

8uantity.

2. )he dimension of area is __________.

2$. )he dimension of linear !elocity is __________.

2%. )he dimension of acceleration is __________.

2&. )he dimension of tor8ue is __________.

2'. 6imension of uni!ersal gra!itational constant 9G: is __________.

3(. A number 4.%1 contained __________ significant figures.

31. ome concepts of static electricity were introduced by __________.

32. 7lectromagnetic wa!e theory was proposed by __________.

33. )he name of a#istani physicist renowned all o!er the world for his


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nuclear research is __________.

34. )he dimension of force is __________.

3. ;el!in the unit of thermodynamic temperature is 1ectors

1. A physical 8uantity, which can be completely specified by its magnitude only, is

called __________.

2. A physical 8uantity, which can be completely described by its magnitude and

direction, is called __________.

3. 6isplacement is a __________ 8uantity.

4. ower is a __________ 8uantity.. )wo !ectors are __________ when they ha!e same magnitude and same direction.

$. )he magnitude of !ector will always be __________.

%. *n parallelogram law of !ector additionthe resultant of two !ectors is represented

by __________ of the parallelogram.

&. ?ormally law of cosine is used to determine the __________ of the resultant

!ector.

'. Law of __________ is normally used to determine the direction of resultant

!ector.

1(. )he magnitude of __________ will always be e8ual to unity.

11. )he rectangular unit !ectors are mutually __________ to each other.

12. )he dot product of two !ectors is a __________.

13. )he __________ product of two !ectors is a !ector.

14. )he scalar product can be defined as that it is the product of magnitude of two

!ectors and __________ of the angle between them.

1. )he !ector product can be defined as that it is the product of the magnitude of

two !ectors and __________ of the angle between them.

1$. )he dot product will not obey the __________ law for !ector multiplication.1%. )he crossproduct will not obey the __________ law for the !ector

multiplication.

1&. A !ector, which can be displaced parallel to itself and applied at any point, is

called __________ !ector.

1'. ?ull !ector can be obtained by __________ a !ector with its negati!e !ector.


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2(. @ero !ectors ha!e __________ particular direction.

21. *f two !ectors are __________ to each other then their dot product is =ero.

22. *f two !ectors are parallel to each other then their __________ product is

=ero.

23. *f , then the magnitude of either of the two !ector is __________.24. )he direction of resultant !ector in a !ector product can be determined by the

__________ rule.

2. )he magnitude of the resultant of two !ectors can be __________ than the sum

of the magnitudes of indi!idual !ectors.

2$. )he magnitude of __________ !ector will always be =ero.

2%. __________.

2&. __________.

2'. )or8ue is the __________ product of force and force arm.

3(. __________ is the dot product of force and !elocity.

31. A !ector, in any gi!en direction whose magnitude is one is called __________.

32. )he set of unit !ectors along ", y and = a"es are called __________ unit

!ectors.

33. *f the magnitude of the resultant of two !ectors e8ual in magnitude is the same,

then the angle between the two !ectors is __________.

34. *f __________.

3. )wo forces, one of $? and the other of &?, act on a point at angle '( with

each other, the magnitude of resultant force is __________.

+hapter 3 0otion

1. )he change of position of a body in a particular direction is called its__________.2. )he change of displacement of a body with respect to time is called its

__________.3. )he rate of change of position in a particular direction is called the

__________ of the body.4. )he total change in displacement di!ided by the total change in time of abody is called its __________.. )he acceleration of a body is uniform when a!erage and instantaneous!alues of the acceleration are __________.$. *f the body mo!es towards earth, neglecting air resistance and smallchanges in acceleration with altitude. )his body is referred to as free falling


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body and its motion is called __________.%. __________ is an agent which changes or tends to change the state of thebody.&. __________ is the property of the matter due to which it will try to

remain in the same state.'. /hen a constant force is applied on a body then it will start to mo!e withconstant __________.1(. 0ass of the body is the measure of __________.11. )ension in string is a __________which will be produced in it whene!er itis sub-ected to pull.12. )he 8uantity of motion produced in a body is called its __________.13. )he momentum of a body is defined as the product of mass and

__________ of the body.

14. A system in which the particles of the system may e"ert some force oneupon the other because of their collision but no e"ternal force can be appliedon them is called __________ system of interacting bodies.1. )he collision between the two bodies is the __________ if totalmomentum as well as the #inetic energy of the system remain the same.1$. *n inelastic collision the #inetic energy of the system will __________conser!ed.1%. *f a massi!e body will collide elastically with a lighter body at rest thenthe lighter body will start to mo!e with a !elocity e8ual to __________ firstbody.1&. )he force, which opposes the motion of body on a surface, is called

__________.1'. )he friction is due to the __________ of the material of the surfaces incontract.2(. )he force of friction always acts __________ to the surfaces in contact.

21. )he direction of the friction will always be __________ to the directionof motion.22. )he friction within a fluid is called its __________.

23. )he friction is said to be __________ when the body slides o!er theother.24. liding friction is __________ than the rolling friction.2. )he ratio of limiting friction to the normal reaction acting between twosurfaces in contact is called __________.2$. *n bicycles the sliding friction is replaced by __________.


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2%. On frictionless inclined plane the acceleration of the body is __________of its mass.2&. On frictionless inclined plane where a B gsin8 if 8 B '( then a B

__________.

2'. On an inclined plane the Cwcos8D will always be e8ual to __________.3(. According to the second law of motion a!erage force applied on the bodyis e8ual to its rate of change of __________.31. __________ friction arises when one solid ob-ect is set into motion acrossthe surface of another solid body.32. __________ friction results when a solid ob-ect mo!es through fluid.33. 1 newton B __________ dynes.34. )he acceleration produced in the body if the applied force is e8ual to theweight of the body is __________.

3. )he law of conser!ation of momentum is e8ui!alent to the ?ewtonDs__________ law of motion.3$. )he motion of -et plane and roc#et are based on conser!ation of

__________.3%. /hen the friction between the surface of an inclined plane and a body onit is e8ual to the component of the weight of the body __________ to theplane, then the body remains at rest on the inclined plane.3&. )he acceleration of body on a smooth inclined plane is ma"imum when theplane is ma#ing an angle of __________ with the hori=ontal.3'. )he terminal !elocity of a spherical body in fluid is in!ersely proportionalto the __________ of the body.4(. *n fluid the acceleration of spherical body becomes =ero when the forceof gra!ity is e8ual to the __________ force offered by the fluid

+hapter 4 0otion in )wo 6imensions

1. )he motion of the ob-ect along a straight line is called __________.

2. )he motion of the ob-ect along a cur!ed path is called __________.

3. ro-ectile motion is the e"ample of the motion of the body in __________dimension.

4. *n pro-ectile motion the ob-ect is purely under the influence of __________.

. *n pro-ectile motion the acceleration due to gra!ity 9g: will always be ta#en as

__________.

$. 6uring the pro-ectile motion the hori=ontal component of its !elocity will


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__________.

%. 6uring the pro-ectile motion the !ertical component of its !elocity is always

__________.

&. )he path of the pro-ectile is a __________ path.

'. 6uring pro-ectile motion the acceleration along hori=ontal direction is __________.

1(. *n pro-ectile the acceleration along !ertical is always __________

11. *n pro-ectile the acceleration along !ertical direction is e8ual to the

__________.

12. )he e"pression for the time to reach the ma"imum height of the pro-ectile is

__________.

13. )he e"pression for the __________ is 2>osin8


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from one point to another on its circumference is called angular __________.

2'. )he unit of angular shift is __________.

3(. )he angular shift per unit time of the particle is called its angular __________.

31. )he direction of angular !elocity can be determined by __________ rule.

32. )he unit of angular !elocity is __________.33. *f a particle co!ers e8ual angular displacement in e8ual inter!als of time then its

angular !elocity is __________.

34. )he rate of change of __________ is called angular acceleration.

3. )he !elocity of the particle tangent to its circular path is called __________.

3$. *n circular motion the time period and angular !elocity of a particle are

__________ proportional to each other.

3%. *f a particle is mo!ing with constant speed along the circumference of a circle

then the acceleration produced in it is called __________.

3&. )he direction of centripetal acceleration will always be towards the __________

of the circle.

3'. +entripetal force is also called __________ force.

4(. )he tangential component of acceleration arises when the speed of the particle is

__________.

41. *n circular motion the centripetal component of acceleration arises when the

__________ is changed.

42. +entripetal and tangential acceleration are always __________ to each other.

43. /hen an ob-ect mo!es around the circular trac#, the centripetal force is

pro!ided by __________ force.

+hapter )or8ue, Angular 0omentum and 78uilibrium

1. A body is said to be in e8uilibrium if it is at rest or is mo!ing with __________

!elocity.

2. *f a body is mo!ing with uniform !elocity then the body is said to be in

__________ e8uilibrium.

3. or the transnational e8uilibrium the net force acting on the body must be

__________.

4. or the rotational e8uilibrium, the net tor8ue acting on the body must be

__________.

. )he body is said to be in complete e8uilibrium if __________ acceleration as well

as angular __________ is =ero.


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$. According to the first condition of e8uilibrium the algebraic sum of all the forces

acting on a body must be e8ual to __________.

%. *f the algebraic sum of all tor8ue acting on a body is e8ual to =ero then the body

will be in __________ e8uilibrium.

&. )he magnitude of tor8ue is e8ual to the product of magnitude of force and its__________.

'. )he unit of tor8ue is * system is __________.

1(. )he !ector product of force and displacement is #nown as __________.

11. )he cloc#wise tor8ue is ta#en as __________ tor8ue.

12. *f the lines of action of the two forces acting on the body are not same then

the body will be in __________ e8uilibrium.

13. )he physical 8uantity, which tends to rotate a body, is called __________.

14. )he angular momentum of a body is conser!ed if the net __________ on it is

=ero.

1. )he force which cannot be replaced by a single e8ui!alent force are said to form

a __________.

1$. __________ is defined as the time rate of change of angular momentum.

1%. *n the system international the units of angular momentum are __________.

1&. )he angular momentum of an isolated system is __________.

1'. A body is said to be in __________ e8uilibrium, if the net force on it is =ero.

2(. *f the net tor8ue on a body is =ero then the body is said to be __________

e8uilibrium.

21. A __________ body is that in which different particles always maintain the same

position relati!e to each other, whether the body is at rest or in motion.

22. *n rotational motion, different particles of the body perform circular motion and

the centers of all these circular orbits lie along a straight line called the

__________.

23. *f a rigid body rotates with a constant angular !elocity w, then different

particles of the body perform uniform circular motion with the __________ angular

!elocity but __________ linear !elocities.

24. )he moment of inertia of a rigid body about a gi!en a"is of rotation is e8ual tothe sum of the products of the mass of each particle of the body and the s8uare of

its __________ from the gi!en a"is.

2. )he __________ of a rigid body about a gi!en a"is of rotation is gi!en by * B

mr2 where CmD is the mass of any particle of the body situated at a distance CrD

from the a"is.


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2$. )he angular momentum of a particle is defined as the __________ product of

the position !ector and the linear momentum of the particle.

2%. )he angular momentum L of a particle is gi!en in terms of m, !, r and 8 as L B

__________.

2&. )he direction of the angular momentum of a particle lies along the __________to the plane formed by the !ectors and .

2'. )he angular momentum of a particle can be e"pressed in the determinant form as

B __________.

3(. )he direction of the angular momentum of a particle mo!ing with !elocity ! in a

circular orbit of radius r is __________ to the direction of the angular !elocity w

which lies along the a"is of rotation.

31. )he centre of gra!ity of uniform circular hoop is at the __________ of the

hoop.

32. )he angular momentum is associated with __________ motion.

33. )he total angular momentum is associated with __________ motion.

34. )he total angular momentum of a system of particles is __________ if the net

e"ternal tor8ue acting on the system is =ero..

3. )he time rate of charge of angular momentum of a body is e8ual to the

__________.

+hapter $ Gra!itation

1. According to the law of gra!itation, e!ery body in the uni!erse attractse!ery other body with a force that is directly proportional to the

__________ and in!ersely proportional to the s8uare of the distance betweentheir centres.2. *f the distance between two bodies is doubled, the gra!itational forcebetween them decreases to __________ of its former !alue.3. *f the distance between two bodies is hal!ed, the force of attractionbetween them increases to __________ its former !alue.4. )he acceleration due to gra!ity is in!ersely proportional to the

__________ of the distance from centre of earth.. )he force of attraction, which the earth e"erts on a body, is called

__________.$. pring balance is used to determine __________ of a body.%. )he point of body at which whole weight of the body seems to act is called

__________.&. *f the force acting on a body is e8ual to its weight then the acceleration


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produced in the body is e8ual to __________.'. )he centre of gra!ity of a body of rectangular shape is the point where its

__________ intersect each other.1(. __________ is the centre of solar system.

11. )he distance from the centre of the earth to the centre of the moon iscalled __________.12. )he time ta#en by the earth to complete one re!olution around the sun is

__________.13. )he direction of weight is always toward the centre of the __________.14. ?ewton made the hypothesis that e!ery body in the uni!erse __________the other body.1. )he moon is freely falling to __________.1$. )he time ta#en by the moon to complete one re!olution around the earth

is __________.1%. )he acceleration of the moon is __________.1&. )he moonDs orbit is about __________.1'. Acceleration due to gra!ity decreases at __________ rate for a pointabo!e the surface of earth then for the same point below the surface of theearth.2(. /eight of a body is a __________ 8uantity.21. )he __________ is responsible for the motion of the planets around thesun.22. Artificial gra!ity is produced in a satellite by spinning its own

__________.23. )he !alue of CgD is in!ersely proportional to the __________ of the radiusof the earth.24. *f the mass of earth becomes four times then the !alue of CgD will be

__________.2. )he acceleration due to gra!ity on moon is __________ the accelerationdue to gra!ity on the surface of the earth.2$. Acceleration due to gra!ity at the centre of the earth is __________.2%. )he weight of a body at the pole is __________ than at e8uator.2&. )he gra!itational pull at e8uator is __________ than at poles.2'. )he force re8uired to pre!ent a body from falling or accelerating in aframe of reference is called the __________ of the body.3(. An astronaut in a satellite orbiting around the earth e"periences a stateof __________ because the satellite orbiting with a centripetal acceleratione8ual to CgD.


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31. Artificial gra!ity is produced in the satellite to o!ercome the __________in the satellite.32. Artificial gra!ity is produced in the satellite by __________ it about itsown a"is.

33. )he !alue of the a!erage density of the earth is __________ #g


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13. )he unit of energy of elementary particles and atoms is __________.

14. )he energy possessed by a body by the !irtue of its motion is called the

__________ energy.

1. )he potential energy of a body is due to its change of __________.

1$. )he wor# done against the gra!itation field is always __________.

1%. )he law of conser!ation of energy states that __________ can neither be

created nor destroyed but it can changed its form.

1&. )he rate of change of momentum multiplied by displacement is called

__________.

1'. /or# done in the gra!itation field is __________ of the path followed.

2(. /or# done in the gra!itation field along a closed path is e8ual to __________.

21. )he source of tidal energy is the rotation of the earth around the __________.

22. )he source of geothermal energy is the __________ in the earthDs interior.

23. )he source of nuclear energy is __________ in hea!y nucleus.

24. 7instein mass energy e8uation is 7 B __________.

2. )he unit of energy is the same as the unit of __________.

2$. )he dimensions of wor# are __________.

2%. 0L2)3 are the dimensions of __________.

2&. )he rate of e"penditure of energy is called __________.

2'. )he amount of wor# done in lifting a body from the surface of the earth to the

=ero point is called __________ energy.


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3(. One horsepower is e8ual to __________ watt.

31. One horsepower is e8ual to __________ ft.lb


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temperature.

24. )he particleDs !elocity at antinodes in standing wa!e is __________.

2. )he pitche of a sound note depends upon its __________ of !ibration.

2$. H B Aosin #" 9coswt: represents the e8uation of a __________ wa!e.

2%. Another term used for 8uality of sound is __________.

2&. )he characteristic by which one sound can be distinguished from other is

#nown as __________.

2'. )he sound absorbing soft porous materials are used in big hall is order to

ha!e good __________.

3(. Iadar is an abbre!iation of __________.

31. *n standing wa!es the distance between two __________ nodes or

antinodes is e8ual to one wa!elength.

32. *n standing wa!es the distance between one node and nearest antinode ise8ual to __________ wa!elength.

33. *n standing wa!es the particles !elocity at the nodal point is __________.

34. )he !elocity of sound wa!es in !acuum is __________.

3. /hen sound wa!es tra!el through any gas the phenomena is __________.

+hapter ' /a!e Aspect of Light

1. ?ewton supported __________ theory of light.

2. __________ suggested wa!e theory of light.

3. __________ formulated electromagnetic theory.

4. hoton is a __________ of light.


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. /a!e theory predicts __________ !elocity of light in material medium then

!acuum.

$. )he first clear demonstration that light is a wa!e phenomenon was made by

__________.

%. )he electromagnetic radiation ha!ing wa!elength between 4(((A and %(((A arecalled __________.

&. )he electromagnetic radiation of wa!elength more than %(((A are #nown as

__________.

'. hotoelectric effect and +ompton effect supported the __________ theory of

light.

1(. *nterference of light can be e"plained on the basis of __________ theory of

light.

11. )he locus of all points, which are in same state of !ibration, is called

__________.

12. )he points of constructi!e interference are always of __________ intensity.

13. )he points of destructi!e interference are of __________ intensity.

14. A small portion of a spherical wa!e front, at a large distance from the source

becomes almost.

1. )he shape of wa!e front at a !ery small distance from the source of light is

__________.

1$. or points of constructi!e interference the path difference between two

interfering wa!e is =ero of __________ of the wa!elength.

1%. or the points of __________ interference the path difference between two

interfering wa!es is odd multiple of half wa!elength.

1&. *f we decrease the distance between slits and screen, in HoungDs 7"periment,

fringe spacing will __________.

1'. *f we decrease the separation between the slits in HoungDs 7"periment the fringe

will __________.

2(. *n HoungDs 7"periment the fringes are e8ually __________.

21. *n HoungDs e"periment the __________ fringe is always bright.

22. A glass plate on which e8ually spaced lines are ruled is #nown as __________.23. )he distance between two consecuti!e slits of diffraction during grating is #nown

as __________.

24. )o obtain ?ewtonDs Iings a __________ lens of __________ focal length is

re8uired.

2. ?ewtonDs rings are formed due to the phenomena of __________ interference.


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2$. *n __________ the central ring may be bright or dar#.

2%. *n thin film interference for destructi!e interference between two interfering

wa!es be __________ or __________ of wa!elength.

2&. *n HoungDs 7"periment two narrow sites are used to obtain __________.

2'. *n 0ichlsonDs interferometer the purpose of beam splitter is to obtain__________.

3(. *n thin film interference phase coherence is obtained by reflecting the light from

__________ and __________ surface of the air film.

31. ?ewtonDs rings are formed due to __________ film formed between con!e"

surface and plane glass sheet.

32. )he speed of Jrays is __________ to the speed of light.

33. __________ is a special type of interference.

34. )he phenomenon of polari=ation confirms the __________ of light.

3. Jray diffraction can be obser!ed when they are made incident on __________.

3$. *n case of HoungDs 7"periment the distance between two consecuti!e bright or

dar# fringes is #nown as __________.

3%. )he bending of light around an obstacle or sharp edge is called __________.

3&. )he phenomenon of polari=ation can be used to chec# __________ of optically

acti!e substances in a solution.

3'. )he points at which two sources cancel each other effects are #nown as points

__________ interference.

4(. *f l is the wa!elength of light in a medium of refracti!e inde" n then wa!elength

of light in air l is e8ual to __________

Objectice-Physics Part I

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Transcript of Objectice-Physics Part I