Assertion :An unmagnetised piece of iron is attracted to a bar magnet. Reason: An atom is equivalent to a current loop.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
A piece of iron is a magnetic material and its domain aligns into two poles when present in a magnetic field of bar magnet.
An atom has charges which are in motion thus there is current and the orbits of rotation enable them as an equivalent current loop.
But iron is attracted due to magnetism and their is no current loop

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