Write three basic properties of photons which are used to obtain Einstein's photoelectric equation

Write three basic properties of photons which are used to obtain Einstein’s photoelectric equation.
Use this equation to draw a plot of maximum kinetic energy of the electrons emitted versus the frequency of incident radiation.
[O.D. Comptt. I, II, III 2014,Delhi Comptt. I, II, III 2013, O.D. I, II, III 2013]

Three basic properties of photons :
(i) Photons are quanta or discrete carriers of S energy.
(ii)The energy of a photon is proportional to the frequency of light.
(iii) The photon gives all its energy to the electron with which it interacts.
Einstein’s photoelectric equation