Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Magnetic Properties of Matter
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Magnetic Properties of Matter
The atoms of a certain material have a permanent magnetic moment...
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 motion of electrons.
Therefore, the material must be diamagnetic.
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 motion of electrons.
Therefore, the material must be diamagnetic.