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JCECE Medical JCECE Medical Solved Paper-2005

  • question_answer
    A needle made of bismuth is suspended freely in a magnetic field. The angle which the needle makes with the magnetic field is:

    A) \[{{0}^{o}}\]              

    B) \[{{45}^{o}}\]

    C)  \[{{90}^{o}}\]            

    D) \[{{180}^{o}}\]

    Correct Answer: C

    Solution :

     Bismuth is a -diamagnetic substance, hence when placed in an external magnetic field it rotates   such   that its   axis   becomes perpendicular to the magnetic field.


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