Q. Magnetic susceptibility of a diamagnetic substance
A) Decreases with temperature
B) Is not affected by temperature
C) Increases with temperature
D) First increase then decrease with temperature
Explanation
(b) Magnetic susceptibility is give as
$X_{m} = \frac{I}{H}$
Large value of $X_{m}$ implies that the material is more susceptible to the field and hence can be easily magnetized. For diamagnetic substance$\ X_{m}$ is small and negative and is independent of temperature.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.