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Magnetism. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceMagnetism.1 Mark
Question
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
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Answer

It is not advisable to slide a magnet on an iron bar back and forth because moving it in opposite directions will work to cancel each other out.

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