. 40% of incident radiant energy on the surface of a thermally transparent

Question

. 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is

Options:

A . 0.45

B . 0.55

C . 0.40

D . 0.75

Answer: Option A

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