The equation given by Bohr to calculate radius of `n^th` orbit of hydrogen atom is

Options

A. `r_(n)=(n^2h^2)/(4pi^2me)`
B. `r_(n)=(n^2h^2)/(4pi^2me)`
C. `r_(n)=(nh^2)/(4pi^2me)`
D. `r_(n)=(n^2h^2)/(4pi^2m^2e)`

Explanation

The equation given by Bohr to calculate raddii of `n^th` orbit of hydrogen atom is
`r_(n)=(n^2h^2)/(4pi^2me^2)`