Question

Which magnetic materials have negative susceptibility?

• A. Diamganetic materials
• B. Paramagnetic materials
• C. Ferromagnetic materials
• D. All of the above

Answer 1

The correct option is A Diamganetic materials

Diamagnetic substances gets slightly magnetised in opposite direction.
Therefore, instensity of magnetisation is small and opposite to the direction of intensity of magnetising field for diamagnetic materials.
Therefore, magnetic susceptibility $X_m=I/H=-ve$