Q. The correct measure of magnetic hardness of a material is
A) Remanant magnetism
B) Hysterses loss
C) Coercivity
D) Curie temperature
Explanation
(c) The correct measure of hardness of a material is its coercivity, $ie$, the field strength required to be applied in opposite direction to reduce the residual magnetism of the specimen to zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.