A magnet of length 10 cm is present on earth. If it is placed facing North pole at the geographical north and the neutral point lies 15cm apart from the each pole, then what will be the pole strength of the magnet. `[B_H= 0.4xx10^-4]`

A bar magnet of length 6 cm is kept vertically with its north pole on the ground . If the distance of neutral point on the ground is 8 cm from the north pole , what will be the magnetic moment of that magnet ? [H=0.36 CGS units]

Two bar magnets A and B , each having a magnetic length of 4 cm are placed along a straight line with their north poles 8 cm apart and facing each other . The neutral point lies on the axis , 2 cm from the north pole of the magnet A . Calculate the ratio of the magnetic moments of A and B . [ Ignore the effect of earth ' s magnetic field ] .

A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror? What is the length of the image?

A bar magnet of length 8 cm is placed on a horizontal plane in the magnetic with its north pole pointing north . If the magnetic moment moment of the the magnet be 90 CGB units and the horizontal component of earth's magnetic field be 0.35 Oe , determine the positions of the neutral points .

If the magnetic moment of a bar magnet of length 5 cm be 1A.m^(2) , what is the strength of each pole ?

If a permanent bar magnet is cut along its length into two equal parts, what will be the pole - strength and magnetic moment of each part ?

A short bar magnet is placed with its north towards north of the earth. A neutral point is obtained on its equational line at a distance of 0.15 m from the centre of the magnet. If the horizontal component of the earth's magnetic field is 0.34 G, find the magnetic dipole moment of the magnet.

A small bar magnet is place in the magnetic meridian with its north pole pointing north . If a neutral point is formed on it perpendicular bisector at a distance of 10 cm from its centre , determine the magnetic moment of the magnet [ given , H=4xx10^(-5)T ]

Two identical thin bar magnets, each of length L and pole strength m are placed at right angles to each other, with the North pole of one touching the south pole of the other. Find the magnetic moment of the system.