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Manipal Medical Manipal Medical Solved Paper-2007

  • question_answer
    The magnetic susceptibility of a paramagnetic substance 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 :

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


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