Complete the following sentences :
(a) If the field lines in a magnetic field are parallel and equidistant, the magnetic field is .............
(b) At a neutral point, the resultant magnetic field is ..........
(c) The neutral points of a bar magnet kept with its north pole pointing towards geographic north are located .......................
A bar magnet of magnetic moment 0.4 Am2 is placed in the magnetic meridian with its north pole pointing north. A neutral point is obtained at a distance of 10 cm from the centre of the magnet.If the length of the magnet is 20 cm, then the value of horizontal component of earth magnetic induction is: