ECAT Pre General Science Physics Chapter 4 Work and Energy

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  • Chapter NameCh 4 - Work and Energy

ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

Which force is not a conservative force?

Question # 2

Energy stored in the spring of a watch is called

Question # 3

The space around the earth in which its gravitational force acts on a body is called

Question # 4

1 J = ________?

Question # 5

Tick the conservative force

Question # 6

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

Question # 7

The commercial unit of electrical energy is :

Question # 8

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

Question # 9

The work performed on an object does not depend on

Question # 10

When force and displacement are perpendicular to each other than work is equal to

Question # 11

Work is a:

Question # 12

Watt x second is unit of:

Question # 13

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

Question # 14

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:

Question # 15

A solar cell converts energy of the Sun into:

Question # 16

Which of the following types of force can do no work on the particle on which it acts

Question # 17

A field in which the work done is moving a body along closed path is zero is called:

Question # 18

A solar cell is made from:

Question # 19

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:

Question # 20

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 # 21

Which of the following is not a unit of power:

Question # 22

Work is always done on a body when:

Question # 23

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 # 24

Work done on a body by gravity in lifting it up to certain height is

Question # 25

The work performed on an object does not depend on:

Question # 26

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

Question # 27

Work is a:

Question # 28

Work is a always done on a body when

Question # 29

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

Question # 30

The field in which work done in moving a body between two points depends upon the path followed is called:

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