Question # 1

Friction is due to

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Roughness

Shape

Smoothness

None

Mercury is used as thermometric material because it has

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Uniform thermal expansion

Low freezing point

Small heat capacity

All the above properties

To make a body more stable ________ should be lowered:

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Axis of rotation

Center of gravity

Stabilty

None

An ideal system gives output:

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50%

60%

80%

100%

The density of a substance can be found with the help of

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Pascal's law

Hooke's law

Archimedes principle

Principle of floatation

The symbol of sigma is :

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Σ

m

=

$

__________ forces have opposite direction:

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Unlike parallel

Parallel

Like parallel

None of these

When horse pulls a cart, the action is on the?

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Cart

Earth

Horse

Earth and Cart

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

The mass of Earth is

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6 x 1018 kg

6 x 1020 kg

6 x 1022 kg

6 x 1024 kg

The formula of torque is:

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L= F x E

E = F x t

t = F x L

E = F x L

If heat Q flows in time 't' through some metal then rate of flow of heat is defined as

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Flow of heat = 2Qt

Flow of heat = Q/t

Flow of heat = t/Q

Flow of heat = Qt

Newton related inertia of the body with its

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Weight

Mass

Density

Force

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

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