COMEDK2013PhysicsMagnetic Properties of Matter

Curie-Weiss law is obeyed by iron

Options

Aat Curie temperature only
Bat all temperatures
Cbelow Curie temperature
Dabove Curie temperature

Correct answer

D. above Curie temperature

Step-by-step solution

Ferromagnetic materials like iron obeys Curie-Weiss law above its Curie temperature. According to Curie-Weiss law, magnetic susceptiblity ( ) of ferromagnetic material is related with temperature T as = C T-T_ C where, C= Curie constant and T_ C = Curie temperature.

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