Q. Above Curie temperature :
A) a ferromagnetic substance becomes paramagnetic
B) a paramagnetic substance becomes diamagnetic
C) a diamagnetic substance becomes paramagnetic
D) a paramagnetic substance becomes ferromagnetic
Explanation
[Solution from source] Above its Curie temperature a ferromagnet loses its domain alignment because thermal agitation wins, and it behaves as a paramagnet. Curie temperature is a property of ferromagnets; paramagnets do not turn ferromagnetic or diamagnetic on heating. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.