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STATEMENT -1 : Antiferromagnetic subatan...

STATEMENT -1 : Antiferromagnetic subatance becomes paramagentic on heating to
hight temperture .
STATEMENT -2 : Heating results in spins of electrons becoming random .

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reasonb is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Both assertion and reason are true and reason is the correct explanation is true. From Curie Weiss law where the susceptibility `chi =(C )/((T-theta_(c )))`. If the temperature rises above the Curie temperature `theta_(c )` ferromagnetic matrials become paramagnetic materials because the domains get destroyed as stated.
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