Which statement is correct about magnetic field lines?

Correct option is B

The correct answer is (b) They never intersect each other.

Explanation:

• A fundamental property of magnetic field lines is that two field lines can never intersect or cross each other.
• If they were to intersect at a single point, it would imply that a magnetic compass needle placed there would uniquely point in two completely different directions simultaneously.
• Since pointing in two directions at once is a physical impossibility, intersection of these lines cannot mathematically or physically occur.
• Instead, the lines repel each other sideways, maintaining continuous parallel paths.

• Magnetic field lines are continuous, closed loops. Outside a bar magnet, they predictably emerge from the North pole and merge at the South pole.
• Inside the magnet, their definitive direction is strictly from the South pole to the North pole.
• The relative closeness or density of the magnetic field lines explicitly indicates the relative strength of the magnetic field in that specific region.

• This is incorrect. While the lines are densely packed (closest together) near the poles due to maximum magnetic strength, they still never physically intersect.

• Magnetic field lines form highly organized, definitive geometric curves that trace the exact vector direction of the magnetic force, not random paths.

• Outside the body of the magnet, field lines universally originate (start) from the North pole and move towards the South pole.