Question # 1

Air and water is conductor:

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Poor

Good

Excellent

None of these

................ causes coastal breeze.

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Conduction

Convection

Radiation

Nil

Leslie's cube is a bod of

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Metal

None Metal

wood

Metalloids

Leslie cube have faces:

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2

3

4

5

Rooms are heated using gas heater by:

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Conduction only

Convection and radiation

Radiation only

Convection only

A black dull surface is a good ________ of heat:

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Emitter

Absorber

Reflector

Both A and B

Larger is the area greater will be:

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Radiation

Transfer of heat

Evaporation

Conduction of heat

A silvery white surface is a :

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Worst reflector

Best reflector

Worst absorber

Best absorber

Which of the following is a good radiator of heat?

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A shining slivered surface

A dull black surface

A white surface

A green coloured surfaced

Those objects that conduct electricity are:

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Conductors

Insulators

Semi conductOrs

None of these

False celling is done to

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Lower the height of ceiling

Keep the roof clean

cool and room

Insulate the ceiling.

A Leslie cube is use to identify :

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Radiation

Conduction

Convection

Both A and B

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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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