Photo electric effect is the phenomenon in which

Options

A. photons come out of a metal when it is hit by a beam of electrons
B. photons come out of the nucleus of an atom under the action of an electric field
C. electrons come out of a metal with a constant velocity depends upon frequency and intensity of incident light
D. electrons come out of a metal with different velocities not greater than a certain value which depends only on the frequency of the incident wave and not its intensity

Answer

D