Which one of the following statements regarding magnetic field is NOT

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

Magnetic field is a quantity that has direction and magnitude
Magnetic field lines are closed curves
Magnetic field lines are open curves
No two magnetic field lines are found to cross each other
This question was previously asked in
UPSC NDA-2 – 2020
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The statement which is NOT correct is (C) Magnetic field lines are open curves. Magnetic field lines form continuous, closed loops. They originate from the North pole and end at the South pole outside the magnet, and continue from the South pole to the North pole inside the magnet.
Magnetic field lines are always closed curves. They provide a visual representation of the direction and strength of a magnetic field.
Statement (A) is correct: Magnetic field is a vector quantity. Statement (B) is correct: Magnetic field lines are closed curves. Statement (D) is correct: Magnetic field lines never cross each other because the magnetic field at any point has a unique direction.

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