A) ferromagnetic material becomes paramagnetic material
B) paramagnetic material becomes diamagnetic material
C) paramagnetic material becomes ferromagnetic material
D) ferromagnetic material becomes diamagnetic material
Correct Answer: A
Solution :
| [a] Ferromagnetism decreases with rise in temperature. If we heat a ferromagnetic substance, then at a definite temperature the ferromagnetic property of the substance suddenly disappears and the substance becomes paramagnetic. The temperature above which a ferromagnetic substance becomes paramagnetic is called the Curie temperature of the substance. |
| Note: The Curie temperature of iron is \[{{770}^{o}}C\] and that of nickel in\[358{}^\circ C\]. |
You need to login to perform this action.
You will be redirected in
3 sec
