Assertion : For higher temperature, the peak emission wavelength of a black body shifts to lower wavelengths.
Reason : Peak emission wavelength of a black body is proportional to the fourth power of temperature.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

B

Explanation

Wien's relation given `lamda` at maximum intensity, `lamda_(m) cdot T=` constant.

Stefan's law,
`sigma T^(4)=` intensity of emission of a particular wavelength does not explains the shift of `lamda_(at)` with absolute temperature.