Ncert Exercises & Solutions

Consider a thin target ( $10^{- 2} m square, 10^{- 3}$ m thickness) of sodium, which produces a photocurrent of 100 $μ$ A when the light of intensity 100 $W / m^{2} (λ = 660 nm)$ falls on it. Find the probability that a photoelectron is produced when a photon strikes a sodium atom.