ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

Work is a:

Scalar quantity A
Vector quantity B
Base quantity C
None of these D

Question # 2

Which one is conservative force

Electric force A
Frictional force B
Normal force C
Air resistance D

Question # 3

The work performed on an object does not depend on:

Force applied A
Angle at which force is inclined to the displacement B
Initial velocity of the object C
Displacement D

Question # 4

When velocity of moving body is doubled, the quantity which is also doubled is its:

K.E. A
Acceleration B
Momentum C
P.E. D

Question # 5

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

1.25 J A
12.5 J B
125 J C
None of these D

Question # 6

In the force applied to parallel to the direction of motion, then the work done is:

Positive A
Negative B
Zero C
None of these D

Question # 7

Maximum work is done when force and displacement are

Parallel A
Antiparallel B
Perpendicular C
Both a and b D

Question # 8

Which of the following types of force can do no work on the particle on which it acts

Frictional force A
Gravitational force B
Electric force C
Centripetal force D

Question # 9

The work performed on an object does not depend on:

Force applied A
Angle at which force is inclined to the displacement B
Initial velocity of the object C
Displacement D

Question # 10

The work done by a force, keeping an object in circular motion with constant speed is:

Zero J A
1 J B
0.1 J C
0.01 J D

Question # 11

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

0.5 Kwn A
2 Kwh B
1 Kwh C
None of these D

Question # 12

The space around the earth in which its gravitational force acts on a body is called

Electric Field A
Gravitational field B
Magnetic field C
Conservative field D

Question # 13

The power of an electric generating station is expressed in:

Kilo Jule A
Kilowatt-hour B
Kilo watt C
Watt D

Question # 14

Work is always done on a body when:

A force acts on it A
It moves through certain distance B
None of A or B is correct C
Both A and B is correct D

Question # 15

The tidal energy is due to gravitational pull of :

sun A
moon B
Mars C
None of these D

Question # 16

Work is a scalar product of

Force, Velocity A
Velocity, Displacement B
Force, Displacement C
Force, Momentum D

Question # 17

The space around the earth within it exerts a force of attraction on other bodies of known as:

Nuclear field A
Conservative field B
Electric field C
Gravitational field D

Question # 18

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Zero A
10.2 J B
100 J C
980 J D

Question # 19

A solar cell is made from:

Iron A
Silicon B
Germanium C
Copper D

Question # 20

The unit of work in CGS system is

Joule A
Erg B
Dyne C
Watt D

Question # 21

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Nuclear field A
Conservative field B
Electric field C
Gravitational field D

Question # 22

The angle between centripetal force and displacement of the body moving in a circle is:

0° A
90° B
180° C
None of these D

Question # 23

Work done is maximum when angle between force and displacement is:

0° A
90° B
180° C
None of these D

Question # 24

The work done on the body will be zero if:

No force is applied on the body A
Force is applied but no displacement B
Angle between F(force) and d(displacement) is 90° C
All of these are correct D

Question # 25

If force and displacement are in opposite direction, the work done is taken as:

Positive work A
Negative work B
Zero work C
Infinte work D

Question # 26

The value of escape velocity of Earth planet comes out to be:

11 m/sec A
11 km/sec B
11 km/hour C
11 cm/sec D

Question # 27

Work done on a body by gravity in lifting it up to certain height is

Maximum A
Minimum B
Zero C
Negative D

Question # 28

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Zero A
10.2 J B
100 J C
980 J D

Question # 29

The field in which work done is moving body between two points depends upon the path followed is called:

Conservative filed A
Non-conservative field B
Electric field C
None of these D

Question # 30

Escape velocity from surface of Moon as compared to that from Earth surface is:

Greater A
Smaller B
Equal C
None of thes D

Sr.#	Question	Answer
1	If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:	A. Power B. Work C. Pressure D. None of these
2	In the force applied to parallel to the direction of motion, then the work done is:	A. Positive B. Negative C. Zero D. None of these
3	Work done is maximum when angle between force and displacement is	A. 0° B. 90° C. 180° D. None of these
4	The field in which work done is moving body between two points depends upon the path followed is called:	A. Conservative filed B. Non-conservative field C. Electric field D. None of these
5	SI Unit of work is	A. Nm^-1 B. Joule C. Nms D. Both a and b
6	The unit of work in CGS system is	A. Joule B. Erg C. Dyne D. Watt
7	When a body moves against the force of friction on a horizontal plane, the work done by the body is:	A. Positive B. Negative C. Zero D. None of these
8	The work performed on an object does not depend on:	A. Force applied B. Angle at which force is inclined to the displacement C. Initial velocity of the object D. Displacement
9	A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:	A. 1.25 J B. 12.5 J C. 125 J D. None of these
10	When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:	A. 2 J B. 0.25 J C. 1 J D. 0.5 J

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ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

ECAT Pre General Science Physics Chapter 4 Work and Energy

Work is a:

Which one is conservative force

The work performed on an object does not depend on:

When velocity of moving body is doubled, the quantity which is also doubled is its:

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

In the force applied to parallel to the direction of motion, then the work done is:

Maximum work is done when force and displacement are

Which of the following types of force can do no work on the particle on which it acts

The work performed on an object does not depend on:

The work done by a force, keeping an object in circular motion with constant speed is:

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

The space around the earth in which its gravitational force acts on a body is called

The power of an electric generating station is expressed in:

Work is always done on a body when:

The tidal energy is due to gravitational pull of :

Work is a scalar product of

The space around the earth within it exerts a force of attraction on other bodies of known as:

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

A solar cell is made from:

The unit of work in CGS system is

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

The angle between centripetal force and displacement of the body moving in a circle is:

Work done is maximum when angle between force and displacement is:

The work done on the body will be zero if:

If force and displacement are in opposite direction, the work done is taken as:

The value of escape velocity of Earth planet comes out to be:

Work done on a body by gravity in lifting it up to certain height is

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

The field in which work done is moving body between two points depends upon the path followed is called:

Escape velocity from surface of Moon as compared to that from Earth surface is:

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