JEE Main & Advanced Physics Magnetism Question Bank Magnet and its Properties

  • question_answer
    The magnetic induction in air at a distance d from an isolated point pole of strength m unit will be             [MNR 1987; CPMT 1991; MP PET 1995; AMU 1999; J & K CET 2005]

    A)            \[\frac{m}{d}\]                    

    B)            \[\frac{m}{{{d}^{2}}}\]

    C)            \[md\]                                    

    D)            \[m{{d}^{2}}\]

    Correct Answer: B

    Solution :

               \[B=\frac{m}{{{d}^{^{2}}}}\]in C.G.S. system.


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