- #1
kihr
- 102
- 0
It is known that for light of a given intensity when incident on a photoelectric material, the number of electrons emitted is independent of the frequency of light, but increases when the intensity of light goes up. However, the maximum kinetic energy of the emitted electrons increases with the frequency of incident light {KE (max) = hNu - W}. [Nu = frequency of light, and W = work function of the photoelectric material]. Therefore the velocity of the electrons increases with frequency of incident light.
I would like to understand as to why the number of electrons emitted is independent of frequency even though the maximum kinetic energy, and hence velocity of emitted electrons, goes up with frequency. I shall appreciate help on this score. Thanks.
I would like to understand as to why the number of electrons emitted is independent of frequency even though the maximum kinetic energy, and hence velocity of emitted electrons, goes up with frequency. I shall appreciate help on this score. Thanks.