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प्रश्न
Why does a paramagnetic sample display greater magnetisation (for the same magnetising field) when cooled?
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उत्तर
Owing to the random thermal motion of the molecules, the alignments of dipoles get disrupted at high temperatures. On cooling, this disruption is reduced. Hence, a paramagnetic sample displays greater magnetisation when cooled.
संबंधित प्रश्न
Which of the following substances are para-magnetic?
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(b) magnetic susceptibility and
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 |
 |
| (a) | (b) |
- Identify the specimen A and B.
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