$A$ magnet is placed in iron powder and then taken out,then maximum iron powder is at

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 resultant magnetic moment of three magnetic dipoles,each of magnetic moment $M$,shown in the arrangement is:

Assertion: The poles of a magnet cannot be separated by breaking it into two pieces.
Reason: The magnetic moment will be reduced to half when a magnet is broken into two equal pieces.

State the direction of the magnetic dipole moment (from $S$ to $N$ pole of the magnet) and write the unit of the magnetic dipole moment.

$A$ magnetic needle is kept in a non-uniform magnetic field. It experiences