A) \[E\propto {{T}^{0}}\]
B) \[E\propto {{T}^{2}}\]
C) \[E\propto {{T}^{4}}\]
D) \[E\propto {{T}^{5}}\]
Correct Answer: C
Solution :
From Stefans law the total radiant energy (E) emitted per second per unit surface area of a black body is proportional to the fourth power of the absolute temperature (T) of the body ie. \[E=\sigma {{T}^{4}}\]or \[E\propto {{T}^{4}}\] where \[\sigma \] is Stefans constant. Note: As the temperature of a surface rises, more and more radiant energy is emitted by it.
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