Inside a bar magnet,the magnetic lines of force

Two short magnets of equal dipole moments $M$ are fastened perpendicularly at their centres. The magnitude of the magnetic field at a distance $d$ from the centre on the bisector of the right angle is ($\mu_0 =$ Permeability of free space).

The unit of magnetic moment is

The incorrect statement regarding the lines of force of the magnetic field $B$ is:

$A$ magnet of magnetic moment $M$ and pole strength $m$ is divided into two equal parts. The magnetic moment of each part will be:

$A$ short bar magnet has a magnetic moment of $0.48 \, J \, T^{-1}$. The magnitude of magnetic field at a point at $10 \, cm$ distance from the centre of the magnet on its axis is