The quantum theory give results which are all together different from results given by classical mechanics.
Now, we’ve to find time period & frequency in this case which can be done as :
where, “f” is frequency which must be radiated by moving electron classically.
The energy of electron in nth orbit according to quantum mechanics is :
i.e. “for every large number ‘n’ ,the quantum frequency υ of radiation is identical with classical frequency ‘f’ of the revolution of the electron.”