Which one of the following is `upsilon_(m) - T` graph for perfectly black body? `upsilon_(m)` is the frequency of radiation with maximum intensity. T is the absolute temperature.

Options

A. A
B. B
C. C
D. D

Answer

B

Explanation

Here, `v_(m)` is the frequency associated with the wavelength, `lambda_(m)` at which maximum spectral radiance is observed when the radiating body is at temperature T.
According to Wien's law : `lambda_(m)` constant
And for all electromagnetic radiation : `vlambda=c`
Where c is the speed of light. So, we can combine these two relations and get `v_(m)propT`