Answer: Small and negative.
- A Large and positive
- B Small and positive
- C Small and negative
- D Zero
Correct answer: C. Small and negative
Explanation: Diamagnetic materials: small negative susceptibility. They are weakly repelled by magnets (e.g., gold, water, bismuth).
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.