question_answer

ASSERTION: The susceptibility of diamagnetic materials does not depend upon temperature.

REASON: Every atom of a diamagnetic material is not a complete magnet in itself.

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

B) If both assertion and reason are true and reason is not the correct explanation of assertion.

C) If assertion is true but reason is false.

D) If both assertion and reason are false.

E) If assertion is false but reason is true.

Correct Answer: C

Solution :

Diamagnetism is non cooperative behavior of orbiting electrons when exposed to an applied magnetic field. Diamagnetic substance are composed of atom which have no net magnetic moment (i.e. all the orbital shells are filled and there are no unpaired electrons). When exposed to a field, a negative magnetization is produced and thus the susceptibility is negative. Behavior of diamagnetic material is that the susceptibility is temperature independent.