A black body is at 727^ C . It emits energy at a rate which is proportional to

NEET 2007 Physics question

A black body is at . It emits energy at a rate which is proportional to

(1)
(2)
(3)Correct
(4)

Answer: (3)

Solution

By Stefan-Boltzmann law the rate of emission of energy by a black body is proportional to the fourth power of its absolute temperature, . The temperature

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Question ID VK-089900