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9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

The ability of body to do work is called:

Choose an answer

Power

Energy

Work

Efficiency

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Question # 2

The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be:

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2.5 J

12.5 J

50 J

100 J

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Question # 3

Which one of the following converts light energy into electrical energy:

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Electric Bulb

Electric Generator

Photocell

Electric generator

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Question # 4

When a body is lifted through height h, the work done on it appears in the form of its

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Kinetic energy

Potential eneger

Elastic potential energy

Geothermal energy

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Question # 5

The S.I unit of work is :

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Question # 6

The tendency of doing work is called :

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Time

Energy

Force

Area

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Question # 7

The ability of a body to do work is known as

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power

energy

kinetic energy

potential energy

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Question # 8

The S.I unit of efficiency is :

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J/s

watt

It has no unit

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Question # 9

The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:

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5 ms^-1

12.5 ms^-1

25 ms^-1

50 ms^-1

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Question # 10

Fossil fuels are usually:

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Carbon di oxide

Hydrogen

Hydrocarbons

Carbon monoxide

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Question # 11

If the velocity of the body becomes double then its kinetic energy will:

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Remain the same

Become double

Become four times

Become half

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Question # 12

A body possesses if it is capable to do work:

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Energy

Power

Force

All

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Question # 13

The ratio of output to input is called:

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work

Efficiency

Force

All of above

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