A short bar magnet produces magnetic fields of equal induction at two points on the axial line and the other on the equatorial line. Then the ratio of the distance is
The magnetic field strength at a point at a distance d from the centre on the axial line of a very short bar magnet of Magnetic moment M is B. The Magnetic induction at a distance 2d from the centre on the equatorial line of a Magnetic Moment 8M will be