The cathode of a photoelectric cell is changed such that the work function changes from $W_1$ to $W_

Question

The cathode of a photoelectric cell is changed such that the work function changes from $W_1$ to $W_2\left(W_1>W_2\right)$. If the current before and after changes are $I_1$ and $I_2$, all other conditions remaining unchanged, then (assuming $h V>W_2$ )

Professor PC Thomas Classes · Answer

Work function change alters kinetic energy, but saturation current depends on intensity.