Question # 1

Larger number of slots are made in radiators to increase:

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Surface temperature

Surface area

Both A and B

Nonr

Glass and transparent polythene sheets allow radiations of wavelength to pass through them:

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Long

Short

Medium

All

A Leslie cube is use to identify :

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Radiation

Conduction

Convection

Both A and B

Birds are able to fly on ____________

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Radiations

Thermals

Air

Layers

Those objects that conduct electricity are:

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Conductors

Insulators

Semi conductOrs

None of these

In thermo flask radiation is stopped by using :

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Green color

Transparent

Silver color

Nil

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

Feathers of bird give good thermal:

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Conduction

Insulation

Convection

None of these

____________ from sun are major source of energy on earth.

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Light

Radiation

Both a & b

None of these

The example of bad conductor is:

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Wool

Copper

Gold

Iron

Convention is done by ____________

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Vibration of atoms

Actual movement of particles

Same as conduction

Nil

Heat is an important form of

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Matter

Energy

Wind

Force

Land breeze blows from:

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Sea to land drawing night

Sea to land during day

Land to sea during night

Land to sea during day

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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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