• # question_answer A beam of light of wavelength $\lambda$ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then A) $N\propto L$ and $E\propto L$ B)  $N\propto L$and $E\propto \frac{1}{\lambda }$ C) $N\propto \lambda$ and $E\propto L$ D) $N\propto \frac{1}{\lambda }$and $E\propto \frac{1}{L}$

[b] Number of photons emitted is proportional to the intensity. Also $\frac{hc}{\lambda }={{W}_{0}}+E$.