Question

what is planks quantum theory

Answer 1

When black body is heated, it emits thermal radiations of different wave lengths or frequency. To explain these radiations, max planck put forward a theory known as planck’s quantum theory.  

Answer 2

Hey !!

This theory was proposed by Max Planck.

The main postulates of this theory are as follows

• The energy emitted or adsorbed by the atoms and molecules will be in the form of discrete packets of energy called quanta.
• The energy of quanta (E) is proportional to its frequency (v)

                      E ∝ v (or) E = hv

where, h = Plank's constant (6.626 × 10⁻³⁴Js)

The energy of quanta is quantised, this E = nhv

Good luck !!