MCQ
An electron (e) is revolving in a circular orbit of radius 'r' in hydrogen atom. The angular momentum of the electron is (M = magnetic dipole moment associated with it and m = mass of electron) ____________.
- A`"mM"/"e"`
- ✓`(2"mM")/"e"`
- C`(4"mM")/"e"`
- D`(3"Mm")/"e"`
