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
- Amay be paramagnetic
- Bmust be diamagnetic
- Cmust be paramagnetic
- 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