ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

Question # 1

The types of mechanical energy is/are:

Kinetic energy A
Potential energy B
Both of these C
None of these D

Question # 2

If one newton force acts on a body and displaces the body through 1m work done on body is

1 dyne A
1 joule B
1KJ C
1 Watt D

Question # 3

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

0° A
90° B
180° C
None of these D

Question # 4

Work done is lowering the bucket into the well is:

Zero A
Positive B
Negative C
None of these D

Question # 5

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

60° A
90° B
30° C
0° D

Question # 6

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

0.5 J A
2 J B
0.25 J C
1 J D

Question # 7

Work done along a closed path in a gravitational field is:

Maximum A
Minimum B
Zero C
Unity D

Question # 8

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 # 9

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

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

Question # 10

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 # 11

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

60° A
90° B
30° C
0° D

Question # 12

Work done is independent of path followed in _______

Gravitational field A
Magnetic field B
Electric field C
All of these D

Question # 13

Which of the following is not a unit of power:

J-sec A
Watt B
N m/sec C
Horsepower 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

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

+5 x 10¹J A
+5 x 10²J B
+5 x 10³J C
+5 x 10⁴J D

Question # 16

The work done in moving a body between two points in a conservative field is independent of the

Direction A
Force applied B
Path followed by the body C
Power D

Question # 17

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 # 18

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

Maximum A
Minimum B
Zero C
Negative D

Question # 19

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

0° A
90° B
180° C
None of these D

Question # 20

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Positive A
Negative B
Zero C
None of these D

Question # 21

Which of the following type 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 # 22

Work done is maximum when angle between force and displacement is

0° A
90° B
180° C
None of these D

Question # 23

A field in which the work done is moving a body along closed path is zero is called:

Nuclear filed A
Conservative field B
Gravitational field C
Non-conservative field D

Question # 24

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Much more A
Very small B
No amount at all C
None of these D

Question # 25

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 # 26

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

Maximum A
Minimum B
Zero C
None of these D

Question # 27

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

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

Question # 28

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

Greater A
Smaller B
Equal C
None of thes D

Question # 29

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 # 30

1 J = ________?

10⁷erges A
10^-7erges B
10⁵erges C
10^-5erges D

Sr.#	Question	Answer
1	Which of the following types of force can do no work on the particle on which it acts	A. Frictional force B. Gravitational force C. Electric force D. Centripetal force
2	Work is a Quantity	A. Vector B. Scalar C. Non-physical D. None of these
3	Work is product of:	A. Force and velocity B. Heat and energy C. Force and displacement D. None of these
4	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
5	A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:	A. Minimum Work B. Maximum Work C. Zero Work D. Negative Work
6	SI Unit of work is	A. Nm^-1 B. Joule C. Nms D. Both a and b
7	The work done in moving a body between two points in a conservative field is independent of the	A. Direction B. Force applied C. Path followed by the body D. Power
8	Work done along a closed path in a gravitational field is:	A. Maximum B. Minimum C. Zero D. Unity
9	In the force applied is parallel to the direction of motion, then work done is:	A. Maximum B. Minimum C. Zero D. None of these
10	Work-energy principle states that work done on the body by applied force is equal to change in:	A. Potential energy B. Kinetic nergy C. Linear momentum D. None of these

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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

The types of mechanical energy is/are:

If one newton force acts on a body and displaces the body through 1m work done on body is

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

Work done is lowering the bucket into the well is:

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Work done along a closed path in a gravitational field is:

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:

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

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Work done is independent of path followed in _______

Which of the following is not a unit of power:

Work is always done on a body when:

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

The work done in moving a body between two points in a conservative field is independent of the

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

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

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

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

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

Work done is maximum when angle between force and displacement is

A field in which the work done is moving a body along closed path is zero is called:

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

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

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

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

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

1 J = ________?

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