A horizontal circular loop carries a current that looks clockwise when viewed from above. It is replaced by an equivalent magnetic dipole consisting of a south pole \(S\) and a north pole \(N.\)

(a)	The line \(SN\) should be along the diameter of the loop.
(b)	The line \(SN\) should be perpendicular to the plane of the loop.
(c)	The south pole should be below the loop.
(d)	The north pole should be below the loop

Choose the correct option from the given ones:
1. (a) and (b) only
2. (b) and (d) only
3. (c) and (d) only
4. (a) and (d) only

Choose the correct option: 
1. (a), (b) 
2. (b), (c) 
3. (c), (d) 
4. (a), (d) 

Consider the situation of the previous problem. The directions of the magnetic field due to the dipole are opposite at

(a) P₁ and P₂

(b) Q₁ and Q₂ 

(c) P₁ and Q₁

(d) P₂ and Q₂

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d)

Previous problem: Consider a magnetic dipole kept in the north-south direction. Let P₁, P₂ Q₁, Q₂ be four points at the same distance from the dipole towards north, south, east and west of the dipole respectively.

To measure the magnetic moment of a bar magnet, one may use

(a) a tangent galvanometer

(b) a deflection galvanometer if the earth’s horizontal field is known

(c) an oscillation magnetometer if the earth’s horizontal field is known

(d) both deflection and oscillation magnetometer if the earth’s horizontal field is not known

Choose the correct option 

1.  (a) , (b) , (c)

2. (b) , (c) , (d)

3. (c) , (d) , (a)

4. (a) , (d) , (b)

A paramagnetic material is placed in a magnetic field. Consider the following statements:

A paramagnetic material is kept in a magnetic field. The field is increased till the magnetization becomes constant. If the temperature is now decreased, the magnetization:

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

The magnetic susceptibility is negative for:

The permanent magnetic moment of the atoms of a material is not zero. The material: