According to Wiens law, the wavelength corresponding to the maximum energy in thermal black body radiation is proportional to

According to Wein's law wavelength of maximum emission of any body is inversely proportional to its absolute temperature (in Kelvin).As a result, as the temperature rises, the maximum (peak) of the radiant energy shifts toward the shorter wavelength.
Thanks & regard
Aarti Gupta
askiitians Faculty