First slide

Magnetic properties of materials

Question

Curie temperature is the temperature above which

Easy

A

Ferro magnetic becomes diamagnetic material
B

Par magnetic material becomes diamagnetic material
C

Ferro magnetic material becomes paramagnetic material
D

Para magnetic becomes ferromagnetic material

Solution

At Curie temperature magnetic susceptibility decreases with increase of temperature and Ferromagnetic substance converts into para magnetic substance
Hence key (3) is correct, (2), (1) and (4) are not correct

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