Question

When the temperature of a luminous body is increased then the frequency corresponding to maximum energy of radiation

• A. increased
• B. decreased
• C. remain unchanged
• D. first increases and then decreases

Answer 1

The correct option is A increased

Wien's displacement law states that the black body radiation for different temperatures peaks at a wavelength inversely proportional to the temperature.
In other words ${\lambda }_m\times T=b$
as frequency is inversely proportional to wavelength
if the temperature of luminous body is increased then the frequency corresponding to maximum energy of radiation also increase.
option (A) is the correct answer.