A metal piece is heated to T1 K. The temperature of the surroundings is T2 K. The heat in the surroundings due to radiation is proportional to
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a
T14−T24
b
T1−T24
c
T14+T24
d
T13+T23
answer is A.
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Detailed Solution
E = σtA(T4-T4) STEFAN BOLTZMANS LAWThe metal piece emits heat σT14 while it absorbs heat σT24 from surroundings. Hence heat in the surroundings due to radiation is proportional to T14−T24.