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प्रश्न
It is said that repulsion is a sure test for magnetism. Why is it so?
संक्षेप में उत्तर
उत्तर
To identify the magnet, repulsion (like poles of two magnets repel) is the only test which will let you know whether the given rod is an iron rod or a bar magnet. Because a magnet attracts an iron object and unlike poles of magnets also attract each other.
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