The magnetic lines of force inside a bar magnet (a) are from north-pole to south-pole of the magnet (b) do not exist (c) depend upon the area of cross-section of the bar magnet (d) are from south-pole to north-pole of the Magnet

Answer: (d). Magnetic field lines form closed loops. Outside the magnet they go from N to S, so to close the loop they must go from S to N inside. So the answer is (d) from south-pole to north-pole.

The magnetic lines of force inside a bar magnet | JEE Main 2003 (AIEEE)

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Bar Magnet & Magnetic Moment

The magnetic lines of force inside a bar magnet

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Answer: (d)

Magnetic field lines form closed loops.
Outside the magnet they go from N to S, so to close the loop they must go from S to N inside.
So the answer is (d) from south-pole to north-pole.

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Bar Magnet & Magnetic Moment question from JEE Main 2003 (AIEEE)

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