ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

A solar cell converts energy of the Sun into:

Question # 7

Most of the geysers occur in:

Question # 8

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

Question # 9

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:

Question # 10

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 the direction of motion will be:

Question # 11

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

Question # 12

The commercial unit of electrical energy is :

Question # 13

The tidal energy is due to gravitational pull of :

Question # 14

Work is always done on a body when:

Question # 15

Work is always done on a body when:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
3 Work done by the force of friction is always
A. Positive
B. Zero
C. Negative
D. Maximum
4 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 the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
5 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
6 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
7 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
A. 60°
B. 90°
C. 30°
D. 0°
8 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
9 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
10 Work done is independent of path followed in _______
A. Gravitational field
B. Magnetic field
C. Electric field
D. All of these

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