1.

Explain Curie temperature.

Answer»

Solution :The ferromagnetic property DEPENDS on temperature.
Increasing the temperature of ferromagnetic substance, dipole moment of its molecules become random and DESTROYED. At high enough temperature a ferromagnetic substance BECOMES PARAMAGNETIC.
The temperature of transition from ferromagnetic to paramagnetism is called the Curie temperature `(T_C)`.
Curie temperature that is in the paramagnetic phase is described by `CHI = (C )/( T- T_C) (T gt T_C)`
The Curie temperature `(T_C)` of some of the ferromagnetic material :


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