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प्रश्न
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
पर्याय
all the domains get oriented in the direction of magnetic field.
all the domains get oriented in the direction opposite to the direction of magnetic field.
domains get oriented randomly.
domains are not affected by magnetic field.
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उत्तर
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase all the domains get oriented in the direction of magnetic field.
Explanation:
Ferromagnetic solids can be permanently magnetised and then all the domains get oriented in the direction of applied magnetic field.
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संबंधित प्रश्न
What type of magnetism is shown by a substance if magnetic moments of domains are arranged in same direction?
Define the following term:
Ferromagnetism
Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.
Explain the following with suitable examples:
Ferrimagnetism
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Antiferromagnetism
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(iii) Cu+ is diamagnetic but Cu2+ is paramagnetic. (Z = 29)
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Reason: The electrons change their spin on heating.
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[permeability of the free space μ0 = 4π × 10-7 Wb/A - m]
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