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Question

Consider an iron nail with ends A and B. A bar magnet is brought near end A of the iron nail with its North Pole facing the end A. Choose the correct statement.

A
The iron nail becomes a temporary magnet with end B as its South Pole.
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B
The iron nail becomes a temporary magnet with end A as its South Pole.
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C
The iron nail becomes a permanent magnet with end A as its North Pole.
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D
The iron nail becomes a permanent magnet with end B as its North Pole.
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Solution

The correct option is B The iron nail becomes a temporary magnet with end A as its South Pole.
When an iron nail is brought near a bar magnet, it gets temporarily magnetised. A magnetic pole induces opposite polarity on the end of an iron nail near to it. Therefore, the end A will become the South Pole and B will become the North Pole.

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