Distinguish between diamagnetic and paramagnetic substances
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Solution
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. |
Concept: Magnetic Properties of Materials
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