Two bodies A and B have thermal emissivities of 0.01 and 0.81 respectively. The surface areas of the two bodies are the same. The two bodies emit total radiant power at the same rate. The wavelength λ B corresponding to maximum spectral radiancy in the radiation from B is shifted from the wavelength corresponding to maximum spectral radiancy in the radiation from A by 1.00 µm. If the temperature of A is 5802 K,
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
(a, b)
P 1 = P 2
T A λ A = T B λ B
σ e A AT A 4 = σ e B AT B 4
T A λ = T B ( λ + 1)
= 
= 3
λ = 
μ m
T B = 
= 
= 1934 K
λ B = λ + 1 = 1.5 μ m
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