The variation of magnetic susceptibility $(\chi )$ with temperature for a diamagnetic substance is best represented by:

Which one of the following characteristics is not associated with a ferromagnetic material?

Which of the following materials exhibits diamagnetism?

Explain the behavior of a superconductor as a diamagnetic material.

Magnets cannot be made from which of the following substances?

$A$ paramagnetic sample shows a net magnetisation of $8 \text{ Am}^{-1}$ when placed in an external magnetic field of $0.6 \text{ T}$ at a temperature of $4 \text{ K}$. When the same sample is placed in an external magnetic field of $0.2 \text{ T}$ at a temperature of $16 \text{ K}$,the magnetisation will be