Particle Nature of Electromagnetic Radiation (Plank’s Quantum Theory):
German scientist Max Plank (1900) propounded quantum theory of radiation. The main point of this theory are
1. Radiation energy could not emit or absorb consistently but it could emit or absorb in discrete quantities. These small bundles of energy are called quanta in terms of light these bundles are referred as ‘photon’
2. The energy (E) of each quanta is proportional to its frequency, i.e.,
Where E = Energy
h = Plank’s constant
(6.62 × 10-34 JS)
c = Speed of light
λ = Wave length
3. The total amount of energy emit or absorb by any particle is multiple or whole number of quatai
i. e., E = n hv
(Where ‘n’ is whole number, n – 1, 2, 3….. )
