Question

What are the laws of photoelectric effect??

Answer 1

The theory of the photoelectric effect must explain the experimental observations of the emission of electrons from an illuminated metal surface. For a given metal, there exists a certain minimum frequency of incident radiation below which no photoelectrons are emitted. This frequency is called the threshold frequency

Answer 2

The first law, says dat the intensity of the photoelectric saturation current is directly proportional to the flux of incident EM radiation, means that the more radiation will hit the plate the higher the intensity of the current produced.

And the second one, says the kinetic energy of the emitted photoelectrons varies linearly with frequency of incident EM radiation, and does not depend on flux, means that the further up the EM spectrum the radiation is, the higher the voltage