The magnetic field lines outside the bar magnet

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Start from the south pole and end at the north pole

Start from the north pole and end at the south pole

Start from both the poles and end at infinity

None of these

answer is B.

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Detailed Solution

The magnetic field lines outside the bar magnet start from the north pole and end at the south pole.
A magnetic field line is an unreal line such that a tangent drawn to it at any point gives the direction of the magnetic field. Magnetic field lines are drawn to show the magnetic fields. The magnetic field lines come out from the north pole and end on a south pole outside the magnetic. Inside the magnetic, the magnetic field lines start from the south pole and end on the north pole.
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