NEET Sample Paper NEET Sample Test Paper-51

  • question_answer The magnetic susceptibility of a paramagnetic substance at \[-73\text{ }{}^\circ C\] 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 :

    \[{{\chi }_{m}}\,\propto \,\frac{1}{T}\,\,\Rightarrow \,\,\frac{{{\chi }_{1}}}{{{\chi }_{2}}}\,\,=\,\,\frac{{{T}_{2}}}{{{T}_{1}}}\,=\,\,\frac{100}{200}\,\,=\,\,\frac{1}{2},\,\,{{\chi }_{2}}\,\,=\,\,2{{\chi }_{2}}\]

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