Magnetism Question 139

Question: A ferromagnetic material is heated above its curie temperature. Which one is a correct statement

[MP PET 1995]

Options:

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

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Answer:

Correct Answer: B

Solution:

On heating, different domains have net magnetisation in them which are randomly distributes. Thus the net magnetisastion of the substance due to various domains decreases to minimum.