Problem 5.277

Electromagnetic radiation of wavelength $\lambda=0.30 \mu \mathrm{m}$ falls on a photocell operating in the saturation mode. The corresponding spectral sensitivity of the photocell is $J=4.8 \mathrm{~mA} / \mathrm{W}$. Find the yield of photoelectrons, i.e. the number of photoelectrons produced by each incident photon.