ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

Try The MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

When a falling body hits ground, its KE changes to _____ energy.

Question # 2

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

Question # 3

Work is a

Question # 4

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

Question # 5

The tidal energy is due to gravitational pull of :

Question # 6

Work done is lowering the bucket into the well is:

Question # 7

The work done on the body will be zero if:

Question # 8

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

Question # 9

Work is always done on a body when:

Question # 10

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

Question # 11

Work is product of:

Question # 12

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

Question # 13

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

Question # 14

Work done in lower and bucket into the well is:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
3 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:
A. 0°
B. 30°
C. 60°
D. 90°
4 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
5 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
6 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
A. +5 X 101J
B. +5 X 102J
C. +5 X 103J
D. +5 X 104J
7 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
8 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
9 Which force is not a conservative force?
A. Frictional force
B. Gravitational force
C. Electric force
D. Elastic spring force
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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