![40% of incident radiant energy on the surface of a thermally transparent body is reflected back](https://www.gkseries.com/blog/wp-content/uploads/2022/04/40-of-incident-radiant-energy-on-the-surface-of-a-thermally-transparent-body-is-reflected-back.png)
Q. 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
A. 0.45
B. 0.55
C. 0.40
D. 0.75
Answer: 0.45
A. 0.45
B. 0.55
C. 0.40
D. 0.75
Answer: 0.45
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