ECAT Pre General Science Physics Chapter 4 Work and Energy Online Test

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  • Chapter NameCh 4 - Work and Energy
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ECAT Pre General Science Physics Chapter 4 Work and Energy Online Test

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ECAT Pre General Science Physics Chapter 4 Work and Energy Online Test

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Question # 1

When a falling body hits ground, its KE changes to _____ energy.

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

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

Question # 4

Watt x second is unit of:

Question # 5

A solar cell is made from:

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

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Question # 8

The commercial unit of electrical energy is :

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 in 25J. The angle which the force makes with the direction of motion will be

Question # 10

Tick the conservation force:

Question # 11

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

Question # 12

Which force is not a conservative force?

Question # 13

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

Question # 14

Work has the dimension as that of:

Question # 15

The power of an electric generating station is expressed in:

Question # 16

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

Question # 17

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

Question # 18

Work is a

Question # 19

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 # 20

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

The energy stored int he water of the dam is:

Question # 25

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:

Question # 26

Work is always done on a body when:

Question # 27

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

Question # 28

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

Question # 29

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 # 30

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:

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