Planck proposed the ad hoc assumption that the radiant energy could exist only in discrete quanta which were proportional to the frequency. This would imply that higher modes would be less populated and avoid the uv catastrophe of the Rayleighs law.
just started university 2 weeks ago ( mechanical engineering)
i hope i will get answers to my question here ( I am a very curious person)
and can get my concepts/base strong as much as possible