ifos • paper_1 • electrodynamicsifos-2012-subject-03-001
Thermal equilibrium — UPSC IFoS 2012 Physics PYQ
Buy PYQ Solution Manual →Find out the number of photons in a cavity of volume 1\cdot 00\text{ cm}^3 under thermal equilibrium at temperature T = 1000\ {}^\circ\text{K}. Assume that \int_0^\infty \frac{x^2 dx}{e^x - 1} = 2\cdot 405.
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