Question

a bar magnet is divided into two equal parts perpendicular to its axis.its magnetic length of each part is 15 cm.find the length of original bar magnet.

Answer 1

here is your answer but I am not sure
let the original length of bar magnet be X
so it divide into x/2 length
the length of each part is 15 cm = x/2
so,
x=30 cm
hence the length of bar magnet may be 30 cm