In a pn junction photocell, the value of photoelectromotive force produced by monochromatic light is proportional to which of the following?

the barrier voltage at pn junction the intensity of the light falling on the cell the frequency of the light falling on the cell the voltage applied at the pn junction.

the intensity of the light falling on the cell

The theory of photocell states that the photoelectromotive force produced by monochromatic light is proportional to the intensity of the light falling on the cell.