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MHT CET 2021 (22 Sep, Shift 1) · Thermal Radiation: Black Body, Stefan & Wien

Thermal Radiation: Black Body, Stefan & Wien question from MHT CET 2021 (22 Sep, Shift 1)

Q93MHT CET 2021 · 22 SEP · SHIFT 1Medium

Thermal Radiation: Black Body, Stefan & Wien

If the temperature of the sun is doubled, the rate of energy received by the earth will be increased by a factor

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Answer: (d)

Power from the sun $P \propto T^4$ ; energy received by the earth is proportional to $P$ .
$T \to 2T \Rightarrow P \to 2^4 P = 16P$
So the answer is (d) 16.

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