A ferromagnetic material is heated above its curie temperature. Which one is a correct statement?
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a
Ferromagnetic domains are perfectly arranged.
b
Ferromagnetic domains becomes random.
c
Ferromagnetic domains are not influenced.
d
Ferromagnetic material changes itself into diamagnetic material.
answer is B.
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Detailed Solution
On heating, different domains have net magnetisation in them which are randomly distributed. Thus, the net magnetisation of the substance due to various domains decreases to minimum.