Physics - Magnetism Question with Solution | TestHub

Diamagnetic materials are characterized by weak repulsion from an external magnetic field, so A is correct. Paramagnetic materials are weakly attracted to a magnetic field, which corresponds to a positive and small magnetic susceptibility (${\chi }_m>0$, typically $10^{-5}$ to $10^{-3}$), so B is correct. Ferromagnetic materials are strongly attracted to magnetic fields and retain some magnetism after the external field is removed, a phenomenon known as hysteresis. So C is correct. The magnetic susceptibility of diamagnetic materials is nearly independent of temperature, unlike paramagnetic and ferromagnetic materials which show significant temperature dependence. So D is incorrect.