Let 220 W/m² of radiant energy is absorbed by a convex surface, 90 W/m²

Question

Let 220 W/m² of radiant energy is absorbed by a convex surface, 90 W/m² is reflected and 40 W/m² is transmitted through it. What is the value of absorptivity?

Options:

A . 0.72

B . 0.62

C . 0.52

D . 0.42

Answer: Option B
Answer: (b).0.62

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