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Which of the following is not a property of magnetic lines of force?

1. They neither have origin nor end.
2. These lines do not intersect
3. outside the magnet their direction is from north pole to south pole and inside the magnet these are from south to north pole.
4. None

Correct answer: None

Solution

Magnetic field lines form closed loops, never intersect, and outside a magnet go from north to south while inside they return from south to north. Since A, B, and C are all correct properties, the only choice that fits is “None.”

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