Assertion: The ferromagnetic substance do not obey Curie's law.
Reason: At Curie point a ferromagnetic substance start behaving as a paramagnetic subsrance.

Options

A. If both Assertain and Reason are true and Reason is the correct explanation of Assertain
B. If both Assertain and Reason are true but Reason is not correct explantion of Assertain
C. If Assertion is true but Reason is false
D. If Assertion is false but Reason in true.

Answer

B

Explanation

The susceptibility of ferromagnetic substance varires inversely with temperature. After curie point the suscceptility of ferromagnetic substance varies inversely with its absolute temperature. These substance obey's Curie's law only above its curie point.