Magnetism And Matter

A bar magnet of length \(6 \mathrm{~cm}\), is placed in the magnetic meridian with \(N\) pole, pointing towards the geographical north. Two neutral points, separated by a distance of \(8 \mathrm{~cm}\) are obtained on the equitorial axis of the magnet. If \(B_H=1.2 \times 10^{-5} \mathrm{~T}\). Then the pole strength of the magnet is