Questions
The rate of dissipation of heat by a black body at temperature T is Q. What will be the rate of dissipation of heat by another body at temperature 2T and emissivity 0.25?
detailed solution
Correct option is B
By Stefan's law Q = σT4The rate of dissipation of heat by a body emissivity e is given be Q' = eσT'4There T' = 2T, e = 0.25∴ Q = 0.25×σ(2T)4 = 4σT4 = 4QTalk to our academic expert!
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