ECAT Physics Chapter 4 Work and Energy

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  • Chapter NameCh 4 - Work and Energy

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

Question # 2

A solar cell is made from:

Question # 3

The commercial unit of electrical energy is :

Question # 4

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 # 5

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

Question # 6

Area under the force displacement graph gives

Question # 7

The power of an electric generating station is expressed in:

Question # 8

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

Question # 9

Tick the conservative force

Question # 10

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

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

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

Question # 13

Work has a dimension as that of:

Question # 14

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 # 15

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

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