Q. No.| 1. | remain constant |
| 2. | increase slightly |
| 3. | increase proportionately with the current |
| 4. | decrease |
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1. Paramagnetic
2. Diamagnetic
3. Ferromagnetic
4. Non-magnetic
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Now, the temperature of the sample is decreased. The magnetisation:
| 1. | increases |
| 2. | decreases |
| 3. | remains unchanged |
| 4. | decreases first and then increases |
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| 1. | will double |
| 2. | will remain constant |
| 3. | will increase but only slightly |
| 4. | will decrease slightly |
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| 1. | all the domains grow in size. |
| 2. | all the domains shrink in size. |
| 3. | some domains grow in size, others shrink. |
| 4. | domains rotate in the magnetic field. |
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| 1. | force along +ve \(y\text-\)axis |
| 2. | force along -ve \(y\text-\)axis |
| 3. | zero force but a clockwise torque |
| 4. | zero force but an anticlockwise torque |
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| 1. | will attract each other |
| 2. | will repel each other |
| 3. | will not exert any force on each other |
| 4. | may attract or repel each other depending on how they are brought together |
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| 1. | attractive. |
| 2. | repulsive. |
| 3. | zero. |
| 4. | any of the above depending on the external field \(B\) and the sample separation. |
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1. \(0.2~\text T\)
2. \(0.02~\text T\)
3. \(0.4~\text T\)
4. \(0.04~\text T\)
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| 1. | \(mB\) | 2. | \(2mB\) |
| 3. | \(\dfrac12mB\) | 4. | zero |
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