When a certain metal was irradiated  with  light  of frequency `4.0 xx 10^(19)s^(-1)`
Channel: Doubtnut
Date: 26/07/2020

When a certain metal was irradiated  with  light  of frequency `4.0 xx 10^(19)s^(-1)` the photoelectrons  emitted had  three times the kinetic energy  as the  kinetic  energy  of photoelectrons emitted when the metal was irradited  with light of frequency `2.0 xx 10^(16) s^(-1)` .Calculate the critical frequency `(v_(0))` of the metal