Question # 1

Amount of heat that flows in unit time is called:

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Rate of flow of heat

Q/t

Conductivity

Both A and B

What gas behaves as glass or polythene to radiation:

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Nitrogen

Hydrogen

Carbon di oxide

Methane

Land breeze from land to sea during:

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Day

Night

Afternoon

Morning

How does heat reaches form sun to earth through?

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Conduciton

Convection

Radiation

None

All are conductors except:

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Copper

Wires

Steel

Wood

All ________ conduct heat easily:

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Non metals

Gases

Material

Metals

Heat reflected form the body depends upon :

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Colour and form

Form and speed

Color and speed

None

More radiation is reflected by the surface.

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White

Coloured

Black

Rough

A black dull surface is a good ________ of heat:

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Emitter

Absorber

Reflector

Both A and B

The radiation from sun is:

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Alpha

Gamma

Radio

Ultraviolet

On hot days cold air from sea began to move towards land:

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Sea breeze

Land breeze

Both A and B

None of these

Leslie's cube is filled with:

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Cold water

Hot water

Mercury

Air

On heating Air becomes.

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Heavier

Lighter

Remain same

None

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9th Class Physics Chapter 9 Transfer of Heat English Medium KPK Boards Online Mcqs MCQs With Answers

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