When light of suitable frequency is incident on a photosensitive material, photo electrons are ejected and photoelectric current flows. If the intensity of the incident light is increased, then

The saturation current will increase

The correct answer is Option (4) → The saturation current will increase

According to Einstein’s photoelectric equation:

$K_{max} = h\nu - \phi$

- $K_{max}$ (maximum kinetic energy of photoelectrons) depends only on the frequency $\nu$ of incident light and the work function $\phi$, not on intensity. - Stopping potential also depends only on $K_{max}$, so it remains unchanged. - Saturation current is directly proportional to the number of photoelectrons emitted, which increases with intensity of light.

Correct Answer: The saturation current will increase