Q 12-14-175JEE MainJEE Main 2020 (5 Sep, Shift 1)Easy
With increasing biasing voltage of a photo diode, the photocurrent magnitude:
Answer: (D) increases initially and saturates finally
In reverse bias, a larger voltage widens the depletion region and collects the photo-generated carriers more completely, so the current rises at first. Once essentially all carriers produced by the incident light are collected, the current saturates at a value set by the light intensity.
Solution by Sreeraj P, M.Sc Physics