where \(\mathrm{C}\) is Curie constant, \(\mathrm{T}=\) temperature

\(\therefore \chi_{\mathrm{m}} \alpha \frac{1}{\mathrm{T}}\)

\(\frac{\chi_{m_{1}}}{\chi_{m_{2}}}=\frac{T_{2}}{T_{1}}=\frac{273+333}{273+30}=\frac{606}{303}=2\)

\(\therefore \chi_{\mathrm{m}_{2}}=\chi_{\mathrm{m}_{1}} / 2=0.5 \chi_{\mathrm{m} _1}=0.5 \chi\)

\(\left(\because \chi _{m_{1}}=\chi \right)\)