Hi Aspirant!

According to Bohr's proposal: The orbist of electron in an atom are quanitized. Each orbit has different level of energy and electrons jump from low to high level by absorbing energy and come back by releasing energy. By this proposal, he dervied the radius of nth orbit of the revolving electron in a hydrogen atom. I am attaching a link below by which you can check out the derivation for same.

LINK: https://learn.careers360.com/school/question-using-bohrrsquos-atomic-model-derive-the-expression-for-the-radius-of-orbit-of-the-revolving-electron-in-a-hydrogen-atom-112184/

Thankyou!