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

Which force is not a conservative force?

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 done on the body will be zero if:

Question # 4

The energy stored int he water of the dam is:

Question # 5

Work done is lowering the bucket into the well is:

Question # 6

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 7

Energy stored in the spring of a watch is called

Question # 8

Work has a dimension as that of:

Question # 9

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

Question # 10

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 # 11

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

Question # 12

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 # 13

Which one is conservative force

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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:
A. 0°
B. 30°
C. 60°
D. 90°
2 The work done moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body `
D. Power
3 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
4 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
5 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
6 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
7 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
8 The work done on the body will be zero if:
A. No force is applied on the body
B. Force is applied but no displacement
C. Angle between F(force) and d(displacement) is 90°
D. All of these are correct
9 SI Unit of work is
A. Nm-1
B. Joule
C. Nms
D. Both a and b
10 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

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