Write characteristics of photoelectric effect.

Explanation

(i)For given photosensitive substance when frequency of incident radiation is greater than threshold frequency,photoelectric current is proportional to intensity of incident radiation.
(ii)For given photosensitive substance and frequency of inicident radiation,saturation current is proportional to intensity of radiation but stopping potential in independent of intensity.
(iii)For given photosensitive substance ,in frequency is less than threshold frequency photoelectric emission will not take place to any higher intensity of radiation.
For frequency greater than threshold frequency `(V gt V_(0))`,stopping potential and maximum of incident radiation but it does not depend on intensity of radiation.
(iv)Photoelctric emission is independent of intensity of radiation.It is instantaneous and take place in time interval of `10^(-9)` s or loss.