A) \[{{(300)}^{4}}\]
B) \[{{(300)}^{3}}\]
C) \[{{(300)}^{2}}\]
D) 300
Correct Answer: A
Solution :
From Stefans law the total radiant energy 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 i.e., \[[M{{L}^{2}}{{T}^{-2}}]\] where \[[M{{T}^{-2}}]\] is Stefans constant. Hence, \[\sqrt{\frac{1}{{{\varepsilon }_{0}}{{\mu }_{0}}}}\]
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