Answer :
Answer:
Hence wavelength of the photons produced by the laser is
[tex]\frac{hc}{eV_0}[/tex]
Explanation:
Given
Efficiency of laser - 30%
As we know
[tex]eV_0 = \frac{hc}{\Lambda}[/tex]
h = plank's constant
c = speed of light
eV0 = band gap
Hence wavelength of the photons produced by the laser is
[tex]\Lambda= \frac{hc}{eV_0}[/tex]