A) paramagnetic substance changes to ferromagnetic
B) paramagnetic changes to diamagnetic
C) diamagnetic changes to paramagnetic
D) ferromagnetic changes to paramagnetic
Correct Answer: D
Solution :
The curie temperature or curie point of a ferromagnetic material is the temperature above which it loses its characteristic ferromagnetic ability to possess a net magnetisation in the absence of an external magnetic field. Hence, above curie temperature material is purely paramagnetic.
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