NEET Physics Magnetic Properties of Materials MCQ Question
Which of the following statements about magnetic properties of materials is correct?
A solenoid can effectively magnetize a ferromagnetic rod when a current is passed through it.
Permanent magnets can only be created by stroking a steel rod with a bar magnet in random directions.
A material with low retentivity is suitable for making permanent magnets.
Hammering a magnetic material in any direction will yield a stronger magnet.
Correct Answer
Detailed Explanation
According to the NCERT context, an efficient way to make a permanent magnet is by placing a ferromagnetic rod in a solenoid and passing a current through it, which utilizes the magnetic field of the solenoid for magnetization.
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