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Conduction

By which mode...

Question

By which mode of heat transfer is heat from Sun transferred to Earth's atmosphere?

A

Radiation

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B

Convection

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C

Conduction

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D

Either radiation or convection

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Solution

The correct option is D
Either radiation or convection

We know that there is no medium between the Sun and the Earth's surface. Radiation is the only mode of heat transmission which doesn't require a medium. Hence heat from Sun reaches Earth's surface by the process of radiation.

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