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Question: Answered & Verified by Expert
\( x_{1} \) and \( x_{2} \) are susceptibility of a paramagnetic material at temperatures \( T_{1} K \) and \( T_{2} K \)
respectively, then
PhysicsMagnetic Properties of MatterKCETKCET 2016
Options:
  • A \( x_{1}=x_{2} \)
  • B \( x_{1} T_{1}=x_{2} T_{2} \)
  • C \( \chi_{1} T_{2}=\chi_{2} T \)
  • D \( x_{1} \sqrt{T_{1}}=x_{2} \sqrt{T_{2}} \)
Solution:
1352 Upvotes Verified Answer
The correct answer is: \( x_{1} T_{1}=x_{2} T_{2} \)
Susceptibility is a dimensionless number. It is a measure of the extent to which a substance becomes magnetized.
Paramagnetic susceptibility \( \chi \) is given as
\[
\begin{array}{l}
\chi=\frac{N g^{2} \beta^{2} S(S+1)}{3 K T} \\
\Rightarrow \chi \propto \frac{1}{T} \text { or } \chi T \propto 1
\end{array}
\]
Therefore \( \chi_{1} T_{1}=\chi_{2} T_{2} \)

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