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Radiation

No medium is ...

Question

No medium is required for transfer of heat by

A

conduction

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B

convection

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C

radiation

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D

both b and c

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Solution

The correct option is C
radiation

Heat transfer by radiation does not require any medium. Heat can be transferred through vacuum also. This is how heat from the sun reaches earth’s surface.

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A) Heat transfer by conduction and convection require a material medium.

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