Question

Use the formula λ_mT = 29 cmK to obtain the characteristic temperature ranges for different parts of the electromagnetic spectrum. What do the numbers that you obtain tell you?

Answer 1

b = 0.29 cmK = 0.0029 mK

(i) wavelength of a r-ray photon,

λ_m = 5 x 10^-12 m

Therefore, temperature required for the emission of a r-ray photon,

These numbers tell us the order of temperature for obtaining radiations in different parts of the electromagnetic spectrum. At these temperatures, the radiation of the corresponding wavelength in a particular case can be emitted at a lower temperature also, but its intensity will not be maximum.