On applying an external magnetic field to a ferromagnetic substance,the domains:

Given below are two statements:
Statement $I$: The diamagnetic property depends on temperature.
Statement $II$: The induced magnetic dipole moment in a diamagnetic sample is always opposite to the magnetizing field.
In the light of the given statements,choose the correct answer from the options given below:

Needles $N_{1}$,$N_{2}$,and $N_{3}$ are made of a ferromagnetic,a paramagnetic,and a diamagnetic substance,respectively. $A$ magnet when brought close to them will

The magnetic susceptibility is negative for

At Curie point,a ferromagnetic material becomes

$A$ sample of paramagnetic salt contains $20 \times 10^{24}$ atomic dipoles each of dipole moment $1.5 \times 10^{-23} \ J \ T^{-1}$. The sample is placed under a homogeneous magnetic field of $0.84 \ T$,and cooled to a temperature of $4.2 \ K$. The degree of magnetic saturation achieved is equal to $15 \%$. What is the total dipole moment (approximate) of the sample for a magnetic field of $0.98 \ T$ and a temperature of $2.8 \ K$? (Assume Curie's law).