Question

The $\chi$ vs $\frac{1}{T}$ graph for an alloy of paramagnetic nature is shown in fig. The curie constant is,

• A. $57\text{K}$
• B. $50\text{K}$
• C. $570\text{K}$
• D. $500\text{K}$

Answer 1

The correct option is B $50\text{K}$




From the figure, $\chi =0.5$ and $\frac{1}{T}=10\times {10}^{-3}{\text{K}}^{-1}$

For, paramagnetic materials, $\chi \propto \frac{1}{T}$

$\chi =\frac{C}{T}$

Where, $C$- is Curie's constant

$\therefore C=\chi \times T=0.5\times \left(\frac{{10}^3}{10}\right)=50\text{K}$

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, $\left(B\right)$ is the correct answer.