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

Options

A. `N prop L` and `E prop L`
B. `N prop L` and `E prop (1)/(lambda)`
C. `N prop lambda` and `E prop L`
D. `N prop (1)/(lambda)` and `E prop (1)/(L)`

Answer

B

Explanation

Number of photons emitted is proportional to the intensity . Also `(hc )/(lambda) = W_(0) + E`