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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