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Concepts Of Physics MCQ Edition [Volume 2]PhysicsMagnetic Properties of Matter

The atoms of a certain material have a permanent magnetic moment equal to zero. The material

Options

  1. Amay be paramagnetic
  2. Bmust be diamagnetic
  3. Cmust be paramagnetic
  4. Dmust be ferromagnetic

Correct answer

B. must be diamagnetic

Step-by-step solution

If the atoms of a material have a permanent magnetic moment equal to zero, it implies that the net magnetic moment of each individual atom is zero. Paramagnetic and ferromagnetic materials require their constituent atoms to possess a permanent, non-zero magnetic moment. In the absence of a permanent magnetic moment, the material can only exhibit diamagnetism. When an external magnetic field is applied, an induced magnetic moment is set up in a direction opposite to the applied field due to the change in orbital mot

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