Question

Property of magnetic field lines.....

Answer 1

Properties of magnetic field lines...

*They do not intersect each other..

*The rotate always in a closed path..

*The field lines move from North to south in outside the magnet...

*Field lines move South to North inside the magnet...

*The strength of the magnetic field will be more when the field is near to the magnet..

*The strength of the magnetic field will be less than the field is away from the magnet...

Answer 2

1) they emerge from the North Pole and merge at the South Pole

2) they do not intersect each other

These two are main properties although you can find many other sources