Write a short note on quantum theory of light.

Explanation

Albert Eintein (1905), endorsing the viwes of Max Plank (1900). Was able to explain photoelectric effect in which light interacts with matter as photons to eject the electrons A photon is a discrete packet of energy. Each photon has enegy E of.
E = hv
Where, h is Plank.s constant `(h = 6.625 xx 10^(-34) js)` and v is frequency of electromagnetic wave. As light has both wave as wall as particle nature it is said to have dual nauture. Thus, it is concluded that light propagates as a wave and interacts with matter as a particle.