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

Question # 1

When a hammer raised up its energy will be:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

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Question # 2

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 # 3

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

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Question # 4

What will be the magnitude of work if a force of 25N pulls a stone through a distance of 5 m in its directions

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25 J

50 J

75 J

125 J

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Question # 5

Solar energy is a type of.

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Renewable

Non-renewable

Natural

None

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Question # 6

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

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Question # 7

Which pair of physical quantities has same SI unit?

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energy , power

power , work

energy , work

work , momentum

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Question # 8

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 # 9

The potential energy of a body of mass 'm' placed at a height 'h' above the surface of earth is equal to

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P.E. = mg

P.E. = mgh

P.E. = 3mgh

P.E. = 2mgh

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Question # 10

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

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Question # 11

A body OF mass 10 kg taken to height of 5m:

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P.E = 500 J

P.E = 50 J

P.E = 5 J

P.E = 5000 J

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Question # 12

If a person is not moving when he lifts a load on his head work is:

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FS Cos𝜽

FS Sin𝜽

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Question # 13

The kinetic energy of a body of mass 2 kg is 25J, its speed is

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5 ms-1

12.5 ms-1

25 ms-1

50 ms-1

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