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

The types of mechanical energy is/are:

Question # 2

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 # 3

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

Question # 4

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

Question # 5

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

Question # 6

The tidal energy is due to gravitational pull of :

Question # 7

Which force is not a conservative force?

Question # 8

Work has the dimension as that of:

Question # 9

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

Question # 10

The work performed on an object does not depend on:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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:

Question # 15

Which one is conservative force

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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 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
3 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
4 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
7 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
8 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
9 Work has the dimension as that of:
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 Work is 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 is correct

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