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Two bar magnets of length 0.1m and poles...

Two bar magnets of length 0.1m and poles strength 75m each, are placed on the same line. The distance between their centres is 0.2 m. what is the reultant force due to one on the other when (i) the north pole of one faces the south pole of the other, (ii) the north pole of one faces the north pole of the other ?

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