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JEE Main & Advanced Physics Magnetism Question Bank Self Evaluation Test - Magnetism and Matter

  • question_answer
    The magnetic susceptibility of a paramagnetic substances at \[-73{}^\circ \,C\]is 0.0060, then its value at -\[173{}^\circ C\] will be

    A) 0.0030

    B) 0.0120

    C) 0.0180

    D) 0.0045

    Correct Answer: B

    Solution :

    [b] As magnetic susceptibility\[{{\chi }_{m}}\propto \frac{1}{T}\], therefore \[\frac{{{\chi }_{2}}}{{{\chi }_{1}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\Rightarrow \frac{{{\chi }_{2}}}{0.0060}=\frac{273-73}{273-173}=\frac{200}{100}=2\] \[{{\chi }_{2}}=2\times 0.0060=0.0120\]


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