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प्रश्न
Give any ‘two’ points of differences between diamagnetic and ferromagnetic substances.
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उत्तर
| Diamagnetic Substance | Ferromagnetic Substance | ||
| 1 | Weakly repelled by a magnet | 1 | Strongly attracted by a magnet |
| 2 | When kept in a non-uniform magnetic field, it shows moderate tendency to move from stronger to the weaker part of the field. | 2 | When kept in a non-uniform magnetic field, it shows strong tendency to move from weaker to the stronger part of the field. |
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संबंधित प्रश्न
Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field?
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Draw magnetic field line when a (i) diamagnetic, (ii) paramagnetic substance is placed in an external magnetic field. Which magnetic property distinguishes this behaviour of the field line due to the substances?
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- Find the maximum magnetization intensity of this sample.
- If the gas in this problem is kept in a uniform magnetic field of 3 T, is it possible to achieve saturation magnetization? Why?
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Which graph shows the variation of magnetic susceptibility (`chi`) with magnetizing field (H) for a paramagnetic substance?
If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?
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- The magnetisation in the core reverses direction.
- The magnetisation in the core diminishes by a factor of about 108.
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- electrostatic field lines can end on charges and conductors have free charges.
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- lines of B cannot end on any material and perfect shielding is not possible.
- shells of high permeability materials can be used to divert lines of B from the interior region.
From molecular view point, discuss the temperature dependence of susceptibility for diamagnetism, paramagnetism and ferromagnetism.
A uniform magnetic field gets modified as shown in figure when two specimens A and B are placed in it.
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| (a) | (b) |
- Identify the specimen A and B.
- How is the magnetic susceptibility of specimen A different from that of specimen B?
An ammeter of resistance R gives a full-scale deflection when a current of 2 A passes through it. If it is measured with a maximum current of 10 A, the required shunt is ______.
- Assertion (A): Diamagnetic substances exhibit magnetism.
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Which of the following cannot modify an external magnetic field as shown in the figure?
Explain the Domain theory in brief.
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