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Assertion : On heating ferromagnetic or...

Assertion : On heating ferromagnetic or ferromagnetic substance , they become paramagnetic
Reason :The electrons change their spin on heating

Text Solution

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When ferromagnetic and ferrimagnetic substances are heated to certain temperature called curie temperature, they become paramagnetic. This is because of the reallignment of the electron spins or their magnetic moments which are now oriented in one particular direction.
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