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QPage 286: Q3: HC Verma: Concepts of Physics - Volume 2 Magnetic Properties of Matter Page 286: Q3 Solution: The permanent magnetic moment of the atoms of a material is…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often mistake a material with no permanent atomic magnetic moment for a paramagnet, forgetting that paramagnetic atoms possess intrinsic moments from unpaired electrons. Remember: diamagnetic substances have zero permanent moments and only develop an induced moment opposite to the applied field, whereas paramagnetic and ferromagnetic materials require non‑zero permanent atomic moments.

The permanent magnetic moment of the atoms of a material is zero. The material _________________.

Multiple Choice Options

  • A must be paramagnetic
  • B must be diamagnetic
  • C must be ferromagnetic
  • D may be paramagnetic

Step-by-Step Verified Solution

**Answer:** (b) must be diamagnetic. **Step-by-Step Explanation:** If atomic magnetic moments are zero, the material is diamagnetic.

All Questions in this Chapter

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