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Demagnetization of Magnets

Magnets which...

Question

Magnets which lose their magnetism on heating can regain their magnetic property, if they have not been heated to their Curie temperature.

A

False

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B

True

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Q. Under what conditions magnets lose their magnetic property?

Magnets can lose their property if they are:

Q. materials lose their magnetism permanently if they are heated above a temperature known as temperature.

Q. A. Ferromagnetic materials will lose their magnetism if heated above a point known as the Curie temperature.
B. You would have to re-magnetize the magnet again, either in a solenoid or with another permanent magnet, in order to restore the magnetism.
C. If you heat a magnet up a little bit, it will lose some of its magnetism, but on returning to room temperature full magnetism can be restored.
Which among the following is/are true?

Q. Assertion :Above Curie temperature, a ferromagnetic material becomes paramagnetic. Reason: When a magnetic material is heated to very high temperature, it loses its magnetic properties.

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Demagnetization of Magnets

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