Two identical magnetic with a length 10 cm and weight 50 g of each are arranged freely with their like poles facing in a inverted vertical glass tube. The upper magnet hangs in the air above the lower one so that the distance between the nearest pole of the magnet is 3mm. Pole strength of the poles of each magnet will be

A large magnet is broken into two pieces, so that their lengths are in the ratio 2:1. The pole strengths of the two piece will be

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

A bar magnet of magnetic moment M is cut into two parts of equal lengths. The magnetic moment and pole strength of either part is

A piece of wire is passed thorugh the gap between the poles of a magnet in 0.1 s. An e.m.f. of 4xx10^-3V is induced in the iwre. The magnetic flux between the poles of the magnet is

A bar magnet of length 10cm is placed in the magnetic meridian with its north pole pointing towards the geographical north. A neutral point is obtained at a distance of 12cm from the centre of the magnet. Find the magnetic moment of the magnet, when H=0.34 gauss.

A short bar magnet is placed with its north pole pointin north. The neutral point is 10 cm away from the centre of the magnet. If H=0.4G, calculate the magnetic moment of the magnet.

If a diamagnetic solution is poured into a U-tube and one am of this U-tube placed between the poles of a strong magnet with the meniscus in a line with the field, then the level of the solution will

Two magnetic poles, one of which is four times stronger than the other exert a force of 5 gf on each other, whe placed at distance of 10 cm in air. Find the strength of each pole.

Three identical bar magnets are rivetted together at centre in the same plane as shown in Fig. EP 5.17 (a). This system is placed at rest in a slowly varying magnetic field. It is found that the system of magnets does not show any motion. The north-south poles of one magnet is shown in the Fig. Determine the poles of the remaining two.

Two equal magnetic poles placed 25 cm apart in air exert a fore o 4xx10^-3N on each other. What should be the distance between them, so that force exerted by them on each other becomes 0.1 N?