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JCECE Engineering JCECE Engineering 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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