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

1.	\(\frac{1}{\sqrt{H}} \)	2.	\(\sqrt{H} \)
3.	\(H \)	4.	\(H^2\)

The apparent dip at a place is always greater than or equal to the value of true dip at that place. This is due to

1.  An increase in the apparent value of B_V

2. A decrease in the apparent value of B_H

3. An increase in the apparent value of B_H

4. Both (1) & (2)

If a bar magnet is kept on a horizontal plane with N-pole of bar magnet facing geographic N-pole and S-pole of bar magnet facing geographic S-pole, then the number of neutral points is:

The magnetization of a piece of iron or steel:

A Gaussian surface is drawn enclosing the N-pole of a bar magnet. The net magnetic flux through the Gaussian surface will be:
(pole strength of N-pole is treated as positive and S-pole as negative)

A material when heated suddenly changes its magnetic property at a particular temperature and above this temperature, its susceptibility is found to be inversely proportional to the absolute temperature. The material may be:

1. Ferromagnetic

2. Diamagnetic

3. Paramagnetic

4. Ferromagnetic or Paramagnetic

Elements of Earth's magnetism is/are

1. Magnetic declination

2. Magnetic Inclination (or dip)

3. The horizontal component of the earth's magnetic field

4. All of these

At angle cos^{-1$\left(\frac{1}{\sqrt{3}}\right)$} to the magnetic meridian, the apparent dip is 60$°$. The true dip at the place is :

1. 30$°$

2. 45$°$

3. 0$°$

4. 60$°$

As we go from the magnetic equator towards the geographic south pole, the angle of the dip will become:

Soft iron is used to manufacture electromagnets because:

1. It has a high permeability.
2. Its retentivity and coercivity are small.
3. Its retentivity and coercivity are high.
4. Both (1) & (2)