The intensities of magnetic field at two points on the axis of a bar magnet at distances `0.1` m and `0.2` m from its middle point are in the ratio `1
The intensities of magnetic field at two points on the axis of a bar magnet at distances `0.1` m and `0.2` m from its middle point are in the ratio `12.5 : 1` . Calculate the distance between the poles of the magnetic .
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