MHT CET202016 Oct 2020Morning ShiftPhysicsMagnetic Effects of CurrentActual
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 )
Options
- A4 mM C
- B2 m M e
- C3 Mmm C
- DmM e
Correct answer
B. 2 m M e
Step-by-step solution
The angular momentum of electron is given as L array l =m v r=m(r ) r=m r² r²= L m (i) array Magnetic dipole moment, array l M=i A= e T r²= e 2 / r²= e 2 r² M= e 2 L m [From Eq. (i)] L= 2 m M e array