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

Question # 2

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

Question # 3

Watt x second is unit of:

Question # 4

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

Question # 5

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 6

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 7

Work is a:

Question # 8

Which force is not a conservative force?

Question # 9

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 # 10

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 # 11

Work is product of:

Question # 12

Work done is lowering the bucket into the well is:

Question # 13

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

Question # 14

The work performed on an object does not depend on

Question # 15

Work done in lower and bucket into the well is:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct
2 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
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 and work done is 25J. the angle which the force makes with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
4 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
5 The work done by a force, keeping an object in circular motion with constant speed is:
A. Zero J
B. 1 J
C. 0.1 J
D. 0.01 J
6 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
7 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
8 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
9 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°
10 The Space around the Earth within which it exerts a force of attraction on other bodies is known as
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field

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