The intensities of magnetic field at teo points on the axis of bar magnet at distance of 10 cm and 20 cm from the middle point in the ratio `18 : 1`. Find the distance between the pole of the magnets.

The intensities of magnetic field at two points on the axis of a bar magnet at distances of 10 cm and 20 cm from the middle point are in the ratio 18:1. Find the distance between the poles of the magnet.

The intensities of a magnetic field at two points on the axis of a bar magnet at distance of 0.15m and 0.2m from its middle point are in the ratio 75 : 20 . Find the distance between the poles of the magnet.

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

The magnetic flux at two points on the axis of a circular coil at distances 5 cm and 20 cm from the centre are in the ratio 8:1. Find the diameter of the coil.

The ratio of magnetic fields on the axial line of a long magnet at distance of 10cm and 20cm is 12.5.1. The length of the magnet is

The magnetic field due to a short magnet at a point in its axis at distance X cm from the middle of the magnet is

A neutral point is found on the axis of a bar magnet at a distance of 10cm from one end. If the length of the magnet is 10cm and H=0*3gauss , find the magnetic moment of the magnet.

A neutral point is found on the axis of a bar magnet at a distance of 10cm from its one end. If the length of the magnet be 10cm , and H=0*3G . Find the magnetic moment of the magnet.

A neutral point is found on the prolongation of the axis of a bar magnet at a distance of 10 cm from the nearer pole. If the length of the bar be 10 cm and H = 28 Am^(-1) , find the pole strength of the magnet.