Question

Which of the following activities will result in the loss of magnetic properties?

• A. By immersing a magnet in water at room temperature.
• B. Heating
• C. Hammering
• D. Keeping a magnet idle for a long time

Answer 1

Answer: (B), (C), (D)

The correct options are
B

Heating

C

Hammering

D

Keeping a magnet idle for a long time

The magnetic properties of a magnet are lost by heating it beyond the Curie temperature (At Curie temperature certain magnetic materials undergo a sharp change in their magnetic properties.). Hammering it repeatedly and keeping it idle for a long time will also result in the loss of magnetic properties. Immersing a magnet in water doesn't lead to loss in magnetic properties.