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Questions  

If the temperature of the sun(black body) is doubled, the rate of energy received on earth will be increased by a factor of

a
2
b
4
c
8
d
16

detailed solution

Correct option is D

Amount of energy radiated = (Temperature)4.

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For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
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