By which of the following processes do sun rays reach the earth?
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radiation
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conduction
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convection
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diffusion
A
Correct answer
Explanation
Sun rays reach Earth through radiation - the transfer of energy through electromagnetic waves across the vacuum of space. Conduction and convection require a medium (solid, liquid, or gas), which doesn't exist in the vacuum between the Sun and Earth. Diffusion is not relevant to solar energy transfer.