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

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    Ratio of magnetic intensities for an axial point and a point on broad side-on position at equal distance d from the centre of magnet will be or The magnetic field at a distance d from a short bar magnet in longitudinal and transverse positions are in the ratio                    [CPMT 1978, 82; KCET 1998]

    A)            1 : 1                                          

    B)            2 : 3

    C)            2 : 1                                          

    D)            3 : 2

    Correct Answer: C

    Solution :

               \[{{B}_{1}}=\frac{2M}{{{d}^{3}}}.{{B}_{2}}=\frac{M}{{{d}^{3}}};\ \ \therefore \ \frac{{{B}_{1}}}{{{B}_{2}}}=2:1\]


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