Pick out the wrong statement ?

Question

Options:

A . With change in temperature, the radiant energy emitted by a black body remains unchanged

B . Absorptivity of a body approaches unity in case of diffuse reflection

C . Absorptivity of a perfectly black body is unity

D . Value of Stefan-Boltzmann constant is 4.876 × 10-8 KCal/m2.hr.°K4

Answer: Option A
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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