Question

For a body at a temperature 200k having wavelength corresponding to maximum emission of radiation is 100 A°. Then find the temperature at which wavelength of maximum radiation is 1500A°​

Answer 1

Explanation:

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 λ

m

×T=b

where λ

m

is maximum wavelength of the radiation, T is the temperature and b is Wien's displacement constant equal to 2.9×10

−3

m/K

λ

m

=

T

b

=

3000

2.9×10

−3

=9.67×10

−7

m

Answer 2

Explanation:

For a body at a temperature 200k having wavelength corresponding to maximum emission of radiation is 100 A°. Then find the temperature at which wavelength of maximum radiation is 1500A°