A bar magnet of magnetic moment M is bent in the form of quadrant of circular arc . The new magnetic moment is

A bar magnet of length l and magnet dipole moment M is bent in the form of an arc. The new magnetic dipole moment is

A bar magnet of moment M is bent into arc, its moment

A magnet of magnetic 'M' is in the form of a quadrant of a circle. If it is strightened, its new magnetic moment will be

A bar magnet of magnetic moment M is bent in shape with equal arm lengths.The new magnet moment is