In photoelectric effect

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 which depends on the frequency and intensity of incident radiation
D. electrons come out of a metal with different velocities nor greater than a certain value which depends only on the frequency of the incident light and not on its intensity

Answer

D

Explanation

NA