The magnetic susceptibility is negative for

Options

A. paramagnetic material onty
B. ferromagnetic material only
C. paramagnetic and ferromagnetic materials
D. diamagnetic materials only

Answer

D

Explanation

As we know the relation between the magnetic permeability and susceptibility of material is `mu_(r)=1+chi_(m) ..........(i)`
For diamagnetic substances, `mu_(r)lt1`
So, accordingly to Eq. (i), the magnetic susceptiblity `(chi_(m)` of diamagnetic substance will ne negative
Wile in case of para and ferromagnetic substances subsceptiblity is positive.