NEET Physics Magnetic Properties of Materials MCQ Question
Which method is described as an efficient way to make a permanent magnet?
Placing a ferromagnetic rod in a solenoid and passing a current
Hammering an iron rod in the north-south direction
Stroking a steel rod with a bar magnet in alternating directions
Cooling basalt containing iron magnets in a magnetic field
Correct Answer
Detailed Explanation
The NCERT context states that an efficient way to make a permanent magnet is to place a ferromagnetic rod in a solenoid and pass a current, which magnetizes the rod.
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