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Q.

When a bar magnet is brought near iron dust, most of the dust get attached to

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a

near the centre

b

near the ends

c

equally everywhere

d

at the centre and at ends

answer is B.

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Detailed Solution

The ends of the bar magnet attract more iron filings than the middle part of the magnet. Because at the ends magnetic field lines are crowded.

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When a bar magnet is brought near iron dust, most of the dust get attached to