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Match the material class with its susceptibility.

1. Diamagnetic   2. Paramagnetic   3. Ferromagnetic

P. Small and positive   Q. Small and negative   R. Large and positive

  • A.1-Q, 2-R, 3-P
  • B.1-R, 2-P, 3-Q
  • C.1-Q, 2-P, 3-R
  • D.1-P, 2-Q, 3-R

Answer: C

The three classes differ by orders of magnitude as well as in sign, and each arises from a different mechanism: induced opposing moments, partial alignment of permanent moments, and cooperative alignment within domains.

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