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Question

Which of the following statement is correct regarding magnets?


A

Rubber is a magnetic material.

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B

Most of the iron filings stick to the middle of a bar magnet when iron filings are sprayed on the bar magnet.

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C

Bar magnets always point towards North-South direction when freely suspended.

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D

Steel is not a magnetic material.

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Solution

The correct option is C

Bar magnets always point towards North-South direction when freely suspended.


The magnetic strength of a magnet is greater at the poles than at the centre. So most of the iron filings will stick to the poles (ends) of a bar magnet and not at the centre.
Also, a bar magnet always points towards North-South direction when suspended freely in Earth's magnetic field. Example of magnetic materials include iron, nickel, steel but not rubber.

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