Question

The perturbation due to the magnetic field is given by ________

(a) µ.B

(b) µ.E

(c) -µ. E

(d) -µ. B

I have been asked this question by my college professor while I was bunking the class.

Question is taken from Zeeman Effect topic in chapter Quantum Physics of Engineering Physics I

Answer 1

Correct option is (d) -µ. B

Easiest explanation: The perturbation on the atom due to the magnetic field is given by -µ. B, where μ is the magnetic moment of the atom.