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cse โ€ข paper_1 โ€ข electrodynamics

[UPSC CSE 2011] Black Body Radiation (Q467, 20M)

In deriving the Rayleigh-Jeans law, we count the number of modes dn corresponding to a wave number k for a photon gas in a cubical box. Consider a cubical container of volume V containing such gas in equilibrium. Calculate the differential number of allowable normal modes of frequency \omega.

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