Question

Why two magnetic line of from never intersect each other?

Answer 1

THE two magnetic field lines can never intersect each other because two tangents can be drawn from that point of intersection which will give two directions of the field from the same point,which is impossible.So, the two magnetic field lines can never intersect each other.

Answer 2

If two magnetic lines of force intersect with each other than there would have been two directions of magnetic field at the point of intersection, which is not possible.