The magnetic lines of force inside a bar magnet are:

1.	from the south to the north pole.
2.	from the north to the south pole.
3.	not present.
4.	intersecting each other.

The material which is used to make permanent magnet has:

Which of the following is not dimensionless?
(where symbols stand for their usual meanings in magnetism)
1. \(\frac{I}{H}\)
2. \(\frac{B}{\mu_0H}\)
3. \(\mu_r\)
4. \(\frac{\mu_r B}{H}\)

The magnetic moment of a magnet \((10 ~\text{cm}\times 4~\text{cm}\times1~\text{cm})\) is \(4 ~\text{Am}^2\). Its intensity of magnetisation is:
1. \(10^{3}~\text{A/m}\)
2. \(10^{2}~\text{A/m}\)
3. \(10^{5}~\text{A/m}\)
4. \(10^{4}~\text{A/m}\)

S.I. unit of intensity of magnetization is:

A ferromagnetic material is placed in an external magnetic field. The magnetic domains:

The possible value of magnetic susceptibility of a diamagnetic material can be:

1. \(-2.45\)

2. \(0.75\)

3. \(-0.5\)

4. \(1.67\)

The bar magnet \(A\) of magnetic moment \(M_A\) is found to oscillate at a frequency twice that of magnet \(B\) of magnetic moment \(M_B\) and the same moment of inertia when placed in a vibration magnetometer. We may say that:

When a magnetic material is subjected to a very small magnetising force \(H,\) the intensity of magnetisation is proportional to: