Stefan-Boltzmann law of thermal radiation for a perfect radiator - Heat Transfer

Q.  According to the Stefan-Boltzmann law of thermal radiation for a perfect radiator, the rate of radiant energy per unit area is proportional to
- Published on 11 Aug 15

a. the temperature of that radiator
b. the square of the temperature of that radiator
c. the cube of the temperature of that radiator
d. the fourth power of the temperature of that radiator

ANSWER: the fourth power of the temperature of that radiator

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