A metal piece is heated up to T K; the temperature of the surrounding is t K. The heat loss to the surrounding due to radiation is proportional to:
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a
T-t4
b
T4-t4
c
T-t14
d
T2-t2
answer is B.
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Detailed Solution
According to Stefan Boltzmann's law heat loss due to radiation is directly proportional to (T)4 -(T0)4 where T is the temperature of the body and T0 is the temperature of the surroundings.