Correct Answer - Option 4 : Wien's displacement law
Concept:
Wien's displacement law:
The wavelength of thermal radiation most copiously emitted by a blackbody is inversely proportional to the absolute temperature of the body. Formally, Wien's displacement law states that the spectral radiance of black-body radiation per unit wavelength peaks at the wavelength λpeak given by:
\({\lambda_{peak}} = \frac{b}{T}\)
where T is the absolute temperature. b is a constant of proportionality called Wien's displacement constant
Rayleigh's law:
An approximate law of scattering of electromagnetic waves by molecules and particles is small compared with the wavelength of the illumination at wavelengths for which absorption is sufficiently small.
Planck's law:
Planck's law describes the spectral density of electromagnetic radiation. These radiations are emitted by black bodies when they remain in thermal equilibrium at a given temperature.
This law gives the spectral distribution of radiation from a blackbody.
Stefan-Boltzmann law:
The total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature.
