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Magnetic lines of force

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An Intiative by Sri Chaitanya

always intersect

are closed curves

are open curves

do not pass through vacuum

answer is B.

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Detailed Solution

Magnetic lines are starts at the North end of a bar magnet and moves towards the south end of the bar magnet (out side of a magnet), and inside of the magnet they will move from south end to North end of the magnet.

So, they are closed curves

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