Home Physics Magnetism and Matter Magnetic Materials Magnetic permeability is maximum for
Physics Magnetism and Matter Magnetic Materials Single Correct MCQ
Published on: September 12, 2026

Magnetic permeability is maximum for

A
Diamagnetic substance
B
Paramagnetic substance
C
Ferromagnetic substance
D
All of these

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Text Solution

Verified by Experts
The correct answer is:
C
Step 1: Understand the types of magnetic materials.
  • Diamagnetic substances are materials that create an opposing magnetic field when exposed to an external magnetic field. Their magnetic permeability is slightly less than that of vacuum (μ < μ0) and they do not retain any magnetization in the absence of an external field.
  • Paramagnetic substances are materials that have unpaired electrons and align with an external magnetic field, which results in a small positive permeability (μ > μ0), but they do not exhibit permanent magnetism once the field is removed.
  • Ferromagnetic substances possess strong magnetic properties due to their atomic structure, allowing them to become magnetized in the presence of a magnetic field and retain that magnetization even after the external field is removed. They have the highest magnetic permeability (μ >> μ0).
Step 2: Compare the magnetic permeabilities.
Among the options provided, ferromagnetic substances have the maximum magnetic permeability compared to diamagnetic and paramagnetic substances. Therefore, the correct answer is Option C: Ferromagnetic substance.

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