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JEE Main & Advanced Physics Magnetism Question Bank Earth's Magnetism

  • question_answer
    At a place, the horizontal and vertical intensities of earth's magnetic field is 0.30 Gauss and 0.173 Gauss respectively. The angle of dip at this place is         [MP PMT 1986]

    A)            30°

    B)            90°

    C)            60°

    D)            45°

    Correct Answer: A

    Solution :

               \[\tan \varphi =\frac{{{B}_{V}}}{{{B}_{H}}}=\frac{0.173}{0.30}=\frac{1.73}{3.0}=\frac{\sqrt{3}}{3}=\frac{1}{\sqrt{3}}\Rightarrow \varphi ={{30}^{o}}\]


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