The coefficient of transmission and coefficient of reflection for a given body at a given temperature are 0.33 and 0.64 respectively. Then the coefficient of emission of the same body at the same temperature will be ______?
Answer: 0.03
Explanation
According to Kirchhoff's law:
Coefficient of emission (e) + Coefficient of reflection (r) + Coefficient of transmission (t) = 1
Given: t = 0.33, r = 0.64
e + 0.64 + 0.33 = 1
e = 1 - 0.97
= 0.03
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