Time taken by an electron to complete one revolution in the Bohr orbit of hydrogen atom in terms of its radius r and quantum number n is:
The correct option is B 4π2mr2nh
We need to find time taken by an e− to complete one revolution in Bohr orbit of H-atom in terms of radius ′r′ and quantum no. ′n′.
We have two relations; Tn=2πrnvn ...(i)
where, Tn=Time period
From equation (ii),
Putting this value in equation (i),