Rahul has a bar magnet and a compass needle. How could he find the polarity of the two ends of the bar magnet.
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as needle of a compass is also a magnet.
so it we take north pole of magnet closser to compass then if the shows repelsion then it is north pole and if it shows attraction then it is south pole.
so it we take north pole of magnet closser to compass then if the shows repelsion then it is north pole and if it shows attraction then it is south pole.
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