Deduce Rayleigh-Jeans law from Planck’s Law of radiation.

4.B] Deduce Rayleigh-Jeans law from Planck’s Law of radiation.

Answer:-

Reduction of Planck’s law

Planck’s law could be reduced to Wien’s distribution law and Rayleigh-Jeans law in the shorter and longer wavelength regions respectively. Thus Plack’s law explains the distribution of energy in the blackbody radiation spectrum completely. Planck’s law is given by