Question

Give a description of the magnetic field lines around a bar magnet

Answer 1

Magnetic field lines are invisible lines that run from North-South pole outside a magnet and runs from South-North pole inside a magnet.
Hope it helps

Answer 2

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♤The magnetic field lines travel from north pole to South Pole outside the magnet and from South Pole to North Pole inside the magnet .

♤These lines are always close and continuous curves .

♤The magnetic field is strong where the magnetic field lines are close together and weak where the lines are far apart .

♤Magnetic field lines are closed near the poles of magnet and become wider as they move away from the pole.

♤No two field lines intersect each other ,if the lines intersect then at that point of intersection there would be two directions pointed by the magnetic needle for the same magnetic field which is not at all possible .