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

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

Question # 2

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

Question # 3

The work performed on an object does not depend on

Question # 4

Which of the following is not a unit of power:

Question # 5

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

Question # 6

The tidal energy is produced due to rotation of Earth relative to:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 11

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

Question # 12

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
2 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
3 Work done is maximum when angle between force and displacement is
A. 0°
B. 90°
C. 180°
D. None of these
4 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
5 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. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
6 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
7 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
8 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
9 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
10 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power

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