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JEE Main & Advanced Sample Paper JEE Main Sample Paper-23

  • question_answer
    A paramagnetic substance of susceptibility \[3\times {{10}^{-4}}\] is placed in a magnetic field of\[4\times {{10}^{-4}}A{{m}^{-1}}\]. Then, the intensity of magnetization in the unit of \[A{{m}^{-1}}\] is:

    A)  \[1.33\times {{10}^{8}}\]                    

    B)  \[0.75\times {{10}^{-8}}\]

    C)  \[12\times {{10}^{-8}}\]                     

    D)  \[14\times {{10}^{-8}}\]

    Correct Answer: C

    Solution :

    Susceptibility \[(X)\,=\frac{Intensity\,of\,magnetisation(I)}{Magnetizing\,field\,(H)}\] or         \[I=XH\]             \[=3\times {{10}^{-4}}\,\times 4\times {{10}^{-4}}\]           \[=12\,\times {{10}^{-8}}\,A{{m}^{-1}}\]


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