A) \[\chi \propto T\]
B) \[\chi \propto {{T}^{-1}}\]
C) \[\chi =\]constant
D) \[\chi ={{e}^{T}}\]
Correct Answer: B
Solution :
For paramagnetic material, product of magnetic susceptibility \[\chi \] and absolute temperature T is constant. i. e., \[\chi T=\] constant or \[\chi \propto \frac{1}{T}\] or \[\chi \propto {{T}^{-1}}\] Note: As temperature increases \[{{\chi }_{m}}\] decreases. At some higher temperature \[{{\chi }_{m}}\] becomes negative and the substance becomes diamagnetic.
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