In the photoelectric effect, light strikes a metal and photoelectrons are ejected. (a) If the intensity of the light is increased, while the frequency is kept constant, the maximum kinetic energy of the photoelectrons will while the rate of photoelectrons will .
(b) If the frequency of the light is increased, while the intensity is kept constant, the maximum kinetic energy of the photoelectrons will , while the rate of photons onto the metal will , so the rate of photoelectrons will .