NDA 2018 Physics question

Which one of the following statements about magnetic field lines is NOT correct ?

(A)They can emanate from a point
(B)They do not cross each other
(C)Field lines between two poles cannot be precisely straight lines at the ends
(D)There are no field lines within a bar magnetCorrect

Answer: (D)

Solution

Magnetic field lines are closed continuous curves: outside the magnet they run from the north pole to the south pole, and inside the magnet they continue from the south pole back to the north

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Question ID VK-031045