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A bar magnet has a pole strength of 36 Am and magnetic length 8 cm. Find the magnetic field at (a) a point on

A bar magnet has a pole strength of 36 Am and magnetic length 8 cm. Find the magnetic field at (a) a point on the axis at a distance of 6 cm from the centre towards the north pole and (b) a point on the perpendicular bisector at the same distance.

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