In photoelectric emission, the energy of the emitted electron is

Options

A. same as that of incident photon
B. larger than that of incident photon
C. less than that of incident photon
D. proportional to the intensity of incident light

Answer

A

Explanation

In the photoelectric effect, the number of emitted electrons and their kinetic energy can be measured as a function of the intensity and frequency of the light. Increasing the intensity of the light beam increases the number of photons in the light beam, and thus increases the number of electrons excited, but does not create the energy that each electron possesses. The energy of the emitted electrons does not depend on the intensity of the incoming light (the num- ber of photons), but only on the energy or frequency of the individual photons ..