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

Question # 1

Kilowatt - hour is unit of _____________

Choose an answer

Power

Energy

Work

K.e

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Question # 2

In Einstin's mass energy equation, c is the :

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Speed of sound

Speed of light

Speed if volume

None of these

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Question # 3

What kind of waste is produced by nuclear power plant?

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Carbon di oxide

Radio active

Fuels

Toxic material

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Question # 4

if a body of a mass 'm' is moving with velocity 'v' then its K.E. is given by

Choose an answer

K.E. = 1/2 mv

K.E. = 1/2 mv2

K.E. = mv2

K.E. = 1/2 m2v

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Question # 5

How many components are there of a solar heating system?

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Question # 6

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 # 7

According to law of conservation of energy increases K.E is equal to:

Choose an answer

Increase P.E

Decrease P.E

Decrease K.E

None of these

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Question # 8

One liter is equal to:

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1 kgcm-3

1000 cm-3

10-6 m3

10-3 m3

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Question # 9

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 # 10

The energy released int he form of nuclear radiations in addition to heat and light is called:

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Mechanical energy

Gravitational energy

Chemical energy

Nuclear energy

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Question # 11

Solar cell is are also known as:

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Electric cell

Photo Cell

Sun cells

Nuclear cells

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Question # 12

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 # 13

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

Choose an answer

Electric bulb

Electric generator

Photo cell

Electric cell

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