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

Question # 1

The power of electric kettle is 500W and takes 2s to heat up, find heat generated?

Choose an answer

E = 250 w

E = 1000 w

E = 10000 J

1KJ

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Question # 2

Work is zero when "F" and "S" will be:

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Parallel

Perpendicular

Anti parallel

Tangent

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Question # 3

Work done is maximum when angle between force and displacement is:

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45°

0°

60°

90°

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Question # 4

Ability of body to do work due to its height is called.

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potential energy

kinetic energy

gravitational potential energy

elastic potential energy

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Question # 5

1 mega watt is equal to:

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10² W

10³ W

10⁵ W

10⁶W

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Question # 6

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

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Remain the same

Become double

Become four time

Become half

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Question # 7

The ability of a body to do work is known as

Choose an answer

power

energy

kinetic energy

potential energy

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Question # 8

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 # 9

If mass of a body becomes half that its energy K.E will be reduce to:

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Zero

Half

Double

4 Times

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Question # 10

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

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Electric bulb

Electric generator

Photo cell

Electric cell

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Question # 11

Kinetic energy is possessed by a body by:

Choose an answer

Virtue of motion

Height

Rest

Nil

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Question # 12

If W stands for work, F stands for force and S stand for displacement, than mathematical work is defined as

Choose an answer

W = P x S

W = F x v

W = F x r

W = F x S

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