Question # 1

Feathers of bird give good thermal:

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Conduction

Insulation

Convection

None of these

More radiation is reflected by the surface.

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White

Coloured

Black

Rough

Which surface is bad emitter:

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White surface

Black surface

Coloured surface

Silver surface

In atoms and molecules are packed closely together:

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Solids

Gas

Liquid

Plasma

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and Radiation

The rate at which various surface absorb heat depends upon:

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Nature of surface

Nature of liquid

Radiation

Emission & absorption

__________ is a major source of heat:

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Mercury

Sun

Fire

Moon

Heat can be transmitted form one object to the other by

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convection

radiation

conduction

all of these

Leslie's cube is filled with:

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Cold water

Hot water

Mercury

Air

Coloured surface is a

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Best emitter

Good emitter

Bad emitter

Wrost emitter

Metals are good conductor of heat due to:

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Free electrons

Reamain same

Small size of their molecules

Rapid vibration of their atoms

In large building central heating system worms on the principle of

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conduction

convection

radiation

waves

Leslie cube have faces:

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2

3

4

5

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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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