Question

Explain why the brightness of incident light has no effect on the kinetic energy per ejected ​

Answer 1

here is yøur answer

If the intensity of the incident radiation is increased, there is no effect on the kinetic energies of the photoelectrons. The kinetic energy depends only on the frequency on the light, and hence the energy provided by each photon. This suggests that the photoelectric effect involves one electron and only one photon