Question

Curie temperature is the temperature above which:

• A. paramagnetic material becomes ferromagnetic material
• B. ferromagnetic material becomes diamagnetic material
• C. ferromagnetic material becomes paramagnetic material
• D. paramagnetic material becomes diamagnetic material

Answer 1

Answer: (C)

ferromagnetic material becomes paramagnetic material

Ferromagnetism decreases with rising temperature. If we heat a ferromagnetic substance, then at a definite temperature the ferromagnetic property of the substance suddenly disappears and substance becomes paramagnetic. The temperature above which a ferromagnetic substance becomes paramagnetic is called Curie temperature of the substance.

So correct answer is option C