Assuming the spectral distribution of thermal radiation energy to obey Wien's formula u (w, T) = Aw3

Question:

Assuming the spectral of thermal radiation energy to obey Wien's formula u (w, T) = Aw3 exp (– aw/T), where a = 7.64ps ∙ K, find for a temperature T = 2000 K the most probable
(a) Radiation frequency;
(b) Radiation wavelength.
Distribution
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