A heated body emits radiation which has maximum intensity at frequency `v_m` If the temperature of the body is doubled:

Options

A. The maximum intensity radiation will be at frequency `2V_(m)`
B. The maximum intensity radiation will be at frequency `v_(m)`
C. The total emitted energy will increase by a factor 16
D. The total emitted energy will increase by a factor 2

Answer

A, C

Explanation

According the Wein's displacement law the wavelength corresponding to maximum spectral intensity is inversely proportional to the temperature so the frequency is directly proportional to the temperature as `lambda=c//v`. Thus option (A) is correct. As total emitted energy is directly proportional to fourth power of absolute temperature option (C) is also correct.