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

Question # 1

S.I unit of pressure is :

Choose an answer

Nm^-2

Newton

Joule

Watt

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Question # 2

It base of a right angled triangle is 3 cm and its perpendicular is 3 cm.Then its hypotenuse will be

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2 cm

4 cm

6 cm

5 cm

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Question # 3

In reading 27.5 first two digits are accurate while third one is.

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Accurate

Correct

Doubtful

In correct

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Question # 4

As we go up the value of atmospheric pressure is

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Decreased

Increased

Remain constnat

None of these

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Question # 5

The bad conductor of heat is:

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Iron

Copper

Air

Aluminum

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Question # 6

O maximum height the P.E of the body is:

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Zero

Maximum

Minimum

None of these

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Question # 7

If a liquid of mass 'm' requires thermal energy 'ΔQv' to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vapourization can be calculated as following:

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Hv = m/ΔQv

Hv = mΔQv

Hv = cmΔQv

Hv =ΔQv/m

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Question # 8

Standards, of physical quantities were established in .

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1910

1020

1950

1960

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Question # 9

ΣF=0 is __________ condition of equilibrium:

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1st

2nd

Unstable

Stable

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Question # 10

The energy stored in coal is:

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Heat energy

Kinetic energy

Chemical enegy

Nuclear energy

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Question # 11

The value of g at a height one Earth's radius above the surface of the earth is:

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1/2 g

1/3 g

1/4 g

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Question # 12

In symbols, Newton's second law of motion is stated as

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F = m/a

F = ma

F = a/m

F = ma²

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Question # 13

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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