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

Question # 1

If 1N is force and body is displaced to 1m than work is :

Choose an answer

2 J

1 J

3 J

4 J

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Question # 2

a ball is thrown vertically upward. Its velocity at the highest point is.

Choose an answer

10 ms^-2

-10 ms^-1

Zero

none of them

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Question # 3

Dull black surface is a best:

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Emitter

Absorber

Reflector

None of these

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Question # 4

Significant figures in an expression are.

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All the digits

All accurately known digits

All the accurately known digits and the first doubtful digit.

All the accurately known digits and all the doubtful digits.

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Question # 5

In symbols, co-efficient of volume expansion is defined as

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β = ΔT/V∘ΔV

β = ΔV/ΔT

β = ΔV/V∘ΔT

β = ΔT/ΔV

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Question # 6

Density is a ratio of mass to:

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Area

Volume

Length

Mass

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Question # 7

A black dull surface is a good ________ of heat:

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Emitter

Absorber

Reflector

Both A and B

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Question # 8

1 mega watt is equal to:

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10² W

10³ W

10⁵ W

10⁶W

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Question # 9

The sun's surface temperature is :

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3,000 K

3,030 k

6,000 K

600 K

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Question # 10

The momentum of two or more than two bodies intersacting remain constant in:

Choose an answer

Law of inertia

Isolated system

System

None

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Question # 11

The speed of light is equal to:

Choose an answer

3 x 10⁵ ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10²ms^-1

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Question # 12

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

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Question # 13

The pressure of liquid is given by

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pg V

pg A

pgh

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