In photoelectric effect the number of photo-electrons emitted is proportional to :
(1) Intensity of incident beam
(2) Frequency of incident beam
(3) Velocity of incident beam
(4) Work function of photo cathode
Correct option (1) Intensity of incident beam
Explanation:
According to photoelectric effect frequency decides whether there will be current or not but the amount of current (no. of photon ejected out) will be decided by the intensity of light.
