question_answer

A particle of mass m moves in a circular orbit in a central potential field If Bohr’s quantization conditions are applied, radii of possible orbitals and energy levels vary with quantum number n as- [JEE Main 12-Jan-2019 Morning]

A)

B)

C)

D)

Correct Answer: B

Solution :

[b] Force due to this field

For circular orbit,        ...(i)

Also, by Bohr’s quantization condition (ii)

For eqn. (i) and (ii),