List of top Physics Questions on Atoms asked in UP CPMT

If radius of the $1^{st}$ orbit of $H$-atom is $0.0529 \,nm$ then the radius of its $3^{rd}$ orbit is

Radius of $n^{th}$ orbit of $H$-like particles is proportional to

For which of the following voltages will the wavelengh of emitted $X$-rays will be minimum?

According to Bohr's model, relation between the radius of an orbit and principal quantum number is