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9th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

In Einstein's mass-energy equation c means speed of light. Its value is:

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3 x 10^-8 ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10¹⁸ms^-1

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Question # 2

If we increase the length of spanner the torque produced will be

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Increased

Decreased

Constant

Zero

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Question # 3

Outer edge of the curved road is elevated to prevent

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Circular motion

Centripetal force

Skidding

Protection

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Question # 4

Tan 90°=

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Infinity

0.866

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Question # 5

Earth revolves around the:

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Moon

Sun

Glaxy

None

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Question # 6

Weight of the body is__________ to the gravity force between body and earth:

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Less than

Greater than

Equal

Constant

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Question # 7

Plasma is in ___________ form.

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Moleculer

Kinetic

Static

Ionized

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Question # 8

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

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Increase P.E

Decrease P.E

Decrease K.E

None of these

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Question # 9

That force which produces an acceleration of one metre per second per second in a body of one kilogram mass is called

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1 joule

1 newton

1 watt

1 ampere

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Question # 10

Centre of gravity of sphere is at:

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Centre of sphere

Outside of sphere

Radius of sphere

None of these

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Question # 11

A silvery white surface is a :

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Worst reflector

Best reflector

Worst absorber

Best absorber

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Question # 12

The main source of energy in the unierse is:

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Moon

Stars

Sun

Planets

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Question # 13

The brids stretch out their wings and circle in the rising currents of hot air called

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conduction

convection

radiation

thermals

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