Question

According to Wien's law,

(a) λ_mT = constant

(b) λ_m/T = constant 

(c) T/λ_m = constant 

(d) T + λ_m = constant

Answer 1

Correct option is (a) λ_mT = constant

It is to be noted that Wein’s Displacement Law is only applicable to ideal black bodies. In real life, the product λ_mT would differ from the value given by Wilhelm Wein.