NEET Physics Magnetic Properties of Materials MCQ Question
What is a characteristic of ferromagnetic materials in the context of making permanent magnets?
They should have high retentivity.
They can only be magnetized by heating.
They do not retain magnetism after the external field is removed.
They are made only from non-metallic substances.
Correct Answer
Detailed Explanation
Ferromagnetic materials should have high retentivity to be suitable for making permanent magnets, as per the hysteresis curve mentioned in the context.
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