When the N - pole of a bar magnet points towards the south and S- pole towards the north, where will the null points be?
A
magnetic axis
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B
magnetic centre
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C
perpendicular division of magnetic axis
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D
N and S pole
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Solution
The correct option is A magnetic axis The point where magnetic field of induction due to a bar magnet is equal and opposite in direction to the earth horizontal component of the earths magnetic field of induction is called null point or neutral point.