Using the Varshni equation, which describes the effect of temperature on the bandgap of semiconductor,E g​ =E go​ −AT 2 /(B+T) find the shift in the peak wavelength (λ 0​ ) emitted from a GaAs LED when it is cooled from 50 ∘ C to 0 ∘ C. The Varshni constants for GaAs are "E go​ =1.519eV,A=5.41×10 − 4 eVK −1 , B=204 K" Assume the peak emission occurs at 1/2kBT above the bandgap of the semiconductor.