question_answer 15)

A short bar magnet of magnetic momentis placed with its axis perpendicular to the earth's field direction. At what distance from the centre of the magnet, the resultant field is inclined at with the earth's field on (a) its normal bisector and (b) its axis. Magnitude of the earth's field at the place is given to be 0.42 G. Ignore the length of the magnet in comparison to the distances involved.  

Answer:

Normal bisector                 Using                 Here                                 or                                                 Axis or                 or