Question # 1

A Leslie cube has faces:

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1

2

3

4

Dull black surface is a best:

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Emitter

Absorber

Reflector

None of these

A Leslie cube is a:

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Metal box

Wooden box

Glass box

None

Convention is done by ____________

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Vibration of atoms

Actual movement of particles

Same as conduction

Nil

See breeze blows form sear to land during:

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day

night

after noon

morning

Leslie's cube is a box of:

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Metal

Non-Metal

Wood

Metalloids

Which surface is bad emitter:

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White surface

Black surface

Coloured surface

Silver surface

The transfer of heat by vibrating molecules in solids :

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Conduciton

Radiation

Convection

None

Poor conductor of heat is:

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Copper

Aluminium

Water

Iron

Convection of heat is a process of heat transfer due to;

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Random motion of molecules

Downward motion of molecules

Upward motion of molecules

Free motion of molecules

Those objects that conduct electricity are:

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Conductors

Insulators

Semi conductOrs

None of these

Which one box is used to keep food hot and ice cream cold for long period?

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Iron box

Aluminium Box

Styrofoam box

Plastic box

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and Radiation

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