Statement-I: | The magnetic field of a circular loop at very far away point on the axial line varies with distance as like that of a magnetic dipole. |
Statement-II: | The magnetic field due to magnetic dipole varies inversely with the square of the distance from the centre on the axial line. |
1. | Statement-I is correct and Statement-II is incorrect. |
2. | Statement-I is incorrect and Statement- II is correct. |
3. | Both Statement-I and Statement-II are correct. |
4. | Both Statement-I and Statement-II are incorrect. |
Assertion (A): | Gauss's law for magnetism states that the net magnetic flux through any closed surface is zero. |
Reason (R): | The magnetic monopoles do not exist. North and South poles occur in pairs, allowing vanishing net magnetic flux through the surface. |
1. | (A) is true but (R) is false. |
2. | (A) is false but (R) is true. |
3. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
1. | increased |
2. | decreased |
3. | unchanged |
4. | fluctuating with time: first increasing and then decreasing |
1. | increases |
2. | decreases |
3. | remains unchanged |
4. | decreases first and then increases |
1. | attractive. |
2. | repulsive. |
3. | zero. |
4. | any of the above depending on the external field B and the sample separation. |