Properties of Magnetic Lines of Force

1. Magnetic field lines are closed and continuous curves.
2. These lines always begin from the north pole of a magnet and merge into the south pole forming closed curves outside the magnet.
3. Inside the magnet, these lines of force originate from its south pole and go towards the north pole.
4. These lines are crowded near the poles where the magnetic field is strong and are far apart where the magnetic field is weak.
5. These lines never intersect each other.