Answer: weakly repelled.
- A weakly repelled
- B strongly attracted
- C strongly magnetised
- D completely unaffected
Correct answer: A. weakly repelled
Explanation: Diamagnetic substances are weakly repelled by a magnetic field.
Magnetic field lines form closed loops: outside the bar magnet they run from the N pole to the S pole; inside, they continue from S back to N, so the lines never start or end anywhere.
Concept context
Bar magnets, Earth's magnetism, and how different materials respond to an external magnetic field - diamagnetic, paramagnetic, and ferromagnetic behaviour.