Assertion : At high temperature, a ferromagnet becomes a paramagnet.
Reason : The ferromagnetic property depends on temperature.

If both assertion and reason are true and reason is the correct explanation of assertion.

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If both assertion and reason are true and reason is not the correct explanation of assertion.

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If assertion is true but reason is false.

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If both assertion and reason are false.

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Solution

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion.
At enough high temperature, a ferromagnet become a paramagnet. The domain structure disintegrates with temperature.

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Assertion : At high temperature, a ferromagnet becomes a paramagnet.Reason : The ferromagnetic property depends on temperature.

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion.At enough high temperature, a ferromagnet become a paramagnet. The domain structure disintegrates with temperature.

Assertion : At high temperature, a ferromagnet becomes a paramagnet.
Reason : The ferromagnetic property depends on temperature.

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion.
At enough high temperature, a ferromagnet become a paramagnet. The domain structure disintegrates with temperature.