Answer: It is weakly repelled.
- A It is strongly attracted
- B It is weakly attracted
- C It is weakly repelled
- D It becomes permanently magnetised
Correct answer: C. It is weakly repelled
Explanation: Diamagnetic materials (e.g., bismuth, copper, water) are weakly repelled by an external magnetic field, having a small negative magnetic susceptibility.
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.