$A$ superconductor exhibits perfect

$A$ paramagnetic material has $10^{28} \text{ atoms/m}^3$. Its magnetic susceptibility at temperature $350 \text{ K}$ is $2.8 \times 10^{-4}$. Its susceptibility at $300 \text{ K}$ is

$A$ uniform magnetic field,parallel to the plane of the paper,exists in space and is initially directed from left to right. When a bar of soft iron is placed in the field parallel to it,the lines of force passing through it will be represented by:

What is a diamagnetic substance?

What are the two reasons for using soft iron as the material for electromagnets?

$A$ paramagnetic salt contains $2 \times 10^{26} \, m^{-3}$ atomic dipoles. Each dipole has a magnetic moment of $1.5 \times 10^{-23} \, A \cdot m^2$. What is the saturation magnetization?