$A$ long magnet is cut into two parts in such a way that the ratio of their lengths is $2 : 1$. The ratio of the pole strengths of both the sections is

The magnetic induction in air at a distance $d$ from an isolated point pole of strength $m$ unit will be:

$A$ wire of magnetic moment $M$ is bent to form a circular arc which subtends an angle $90^o$ at the center. Then,its new magnetic moment is:

Out of the following units,the $WRONG$ unit of magnetic dipole moment is

The following figures show the arrangement of bar magnets in different configurations. Each magnet has a magnetic dipole moment $\vec{m}$. Which configuration has the highest net magnetic dipole moment?

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).