One black body at temperature T is surrounded by another black body at temperate T_1 (T_1 < T). At T, the radiation emitted by inner blackbody per unit area per second is proportional to

MHT CET Physics question

One black body at temperature T is surrounded by another black body at temperate (). At T, the radiation emitted by inner blackbody per unit area per second is proportional to

(A)Difference of temperature of two blackbodies
(B)Fourth power of difference of temperature of two black-bodies
(C)Difference of fourth powers of temperature of two bodiesCorrect
(D)Sum of fourth powers of temperature of the bodies

Answer: (C)

Solution

The net radiation exchanged is , i.e. proportional to the difference of the fourth powers

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Question ID VK-063317