Answer: inversely proportional to.
- A inversely proportional to
- B directly proportional to
- C exactly equal to
- D entirely unrelated to
Correct answer: A. inversely proportional to
Explanation: χ ∝ 1/T, so paramagnetic susceptibility falls as temperature rises.
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.