A bar magnet 30 cm long is placed in the magnetic meridian with its north pole pointing south. The neutral point is observed at a distance of 30 cm from its one end. Calculate the pole strength of the magnet. Given horizontal component of earth's field = 0.34 G.
A. 4.3 Am
B. 5.2 Am
C. 6.9 Am
D. 8.6 Am