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

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

Question # 2

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 # 3

When a wall is pushed by a person very strongly, he has done:

Question # 4

Work is a Quantity

Question # 5

When two protons are brought are brought closer potential energy of both of them:

Question # 6

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 # 7

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

Question # 8

The dimensions of work

Question # 9

Which force is not a conservative force?

Question # 10

A solar cell is made from:

Question # 11

Work done is independent of path followed in _______

Question # 12

Energy stored in the spring of a watch is called

Question # 13

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

Question # 14

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

Question # 15

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:

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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 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
2 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
3 Maximum work is done when force and displacement are
A. Parallel
B. Antiparallel
C. Perpendicular
D. Both a and b
4 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
5 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
6 Work has a dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 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
8 A field in which the work done in moving a body along closed path is zero is called
A. Nuclear Field
B. Conservative field
C. Gravitational field
D. Non-conservative field
9 Watt x second is unit of:
A. Force
B. Work
C. Power
D. None of these
10 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J

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