Physics-Magnetic Properties of Materials
NEET Physics Magnetic Properties of Materials MCQ Question
Type: MCQ-fact-Hard-Class 12
Which method is described as an efficient way to make a permanent magnet?
A
Placing a ferromagnetic rod in a solenoid and passing a current
B
Hammering an iron rod in the north-south direction
C
Stroking a steel rod with a bar magnet in alternating directions
D
Cooling basalt containing iron magnets in a magnetic field
Correct Answer
Option A
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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