Question

Which of the following statements about magnetic field lines is correct?

Q: Answer-Which of the following statements about magnetic field lines is correct?

Magnetic field lines are a visual representation of the magnetic field. They have both magnitude and direction. The relative strength of the magnetic field is shown by the closeness of the field lines, not their intersections. If two magnetic field lines were to cross, it would imply two directions at a single point, which is impossible. Field lines conventionally emerge from the north pole and merge at the south pole of a bar magnet.