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प्रश्न
Distinguish between diamagnetic and paramagnetic substances.
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उत्तर
| Sr. No. | Diamagnetic substance | Paramagnetic substance |
| 1. | In an external magnetic field, a substance gets weakly magnetised in the direction opposite to that of the field. | In an external magnetic field, a paramagnetic substance gets weakly magnetised in the same direction as that of the field. |
| 2. | When placed in a non-uniform magnetic field, it tends to move from the stronger to the weaker part of the field. | When placed in a non-uniform magnetic field, it tends to move from the weaker to the stronger part of the field. |
| 3. | It is weakly repelled by a magnet. | It is weakly attracted by a magnet. |
| 4. | Magnetic moment of every atom of a diamagnetic substance is zero. | Every atom of a paramagnetic substance is a magnetic dipole having a certain resultant magnetic moment. |
| 5. | When a rod of diamagnetic substance is suspended in a uniform magnetic field, it comes to rest with its length perpendicular to the direction of the field. | When a rod of paramagnetic substance is suspended in a uniform magnetic field, it comes to rest with its length parallel to the direction of the field. |
| 6. | There is no effect of temperature on diamagnetic substance. | There is effect of temperature on paramagnetic substance. |
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संबंधित प्रश्न
Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.
Give any ‘two’ points of differences between diamagnetic and ferromagnetic substances.
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Bi, Al, Na, Cu, Ca and Ni
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Choose the correct option:
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Answer in brief.
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A uniform magnetic field gets modified as shown in figure when two specimens A and B are placed in it.
 |
 |
| (a) | (b) |
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Explain the Domain theory in brief.
Explain the meaning of the following statement:
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Which substances are strongly magnetised in the direction of the magnetising field?
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What is the susceptibility of diamagnetic substances?
What is the susceptibility of paramagnetic substances?
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What happens to paramagnetic substances on cooling at the Curie temperature?
What causes the magnetic behaviour of ferromagnetic substances?
How are the tiny domains oriented in an unmagnetised ferromagnetic specimen?
