A) \[\chi \]
B) \[0.5\chi \]
C) \[2\chi \]
D) \[11.1\chi \]
E) \[0.09\chi \]
Correct Answer: E
Solution :
Susceptibility of ferromagnetic material is inversely proportional to temperature \[\chi \propto \frac{1}{T}\] \[\therefore \] \[\frac{{{\chi }_{1}}}{{{\chi }_{2}}}=\frac{{{T}_{2}}}{{{T}_{1}}}\] Given \[T=30{}^\circ C,{{T}_{2}}=333{}^\circ C,{{\chi }_{1}}=\chi \] \[\therefore \] \[{{\chi }_{2}}=\frac{{{T}_{1}}}{{{T}_{2}}}\chi =\frac{30}{333}\chi =0.09\chi \]
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