Multiple choice

When a bar magnet is immersed in a heap of iron fillings and is then taken out, it is observed that iron fillings stick to the surface of the bar magnet. The iron fillings would be observed to

  1. stick uniformly throughout the surface of the bar magnet

  2. stick randomly on the surface of bar magnet

  3. have maximum concentration at the two ends of the bar magnet

  4. have maximum concentration slightly away from the two ends of the bar magnet
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Magnets have maximum magnetic strength at the ends and the minimum strength towards the centre.

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