Question # 1

Convection of heat is a process of heat transfer due to;

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Random motion of molecules

Downward motion of molecules

Upward motion of molecules

Free motion of molecules

Momentum is defined as the product of

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Mass and acceleration

Force and acceleration

Mass and velocity

Force and velocity

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

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45°

0°

60°

90°

Expansion in one meter steel is:

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1.0 mm

0.1 mm

1.0 mm

1.3 mm

Which law of motion is called law of inertia:

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first law of motion

Second law of motion

Third law of motion

Law of conversation of momentum

................. can be add algebraically.

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Scalar quantities

Vector

All

None

What type of conversion is done candle burning?

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Chemical __ ;light

Chemical __ heat

Both a & b

None of above

The word science means.

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Intelligence

Nature

Knowledge

Philosphy

Moon complete it's one revolution around earth is days:

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22

23

27.3

25

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

F = Kx is mathematical form of which law:

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Law of gravity

Hooke's Law

Einstein's theory

It is just relation

A simple way to know how much a body is hot or cold is

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Our sense of touch

Termometer

Thermostat

Setback state

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

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

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