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

  • question_answer
    At a place, if the earth's horizontal and vertical components of magnetic fields are equal, then the angle of dip will be  [SCRA 1994; DCE 2001; MP PMT 2002]

    A)            \[30{}^\circ \]                      

    B)            \[90{}^\circ \]

    C)            \[45{}^\circ \]                      

    D)            0°

    Correct Answer: C

    Solution :

               \[{{B}_{V}}={{H}_{H}}\tan \varphi ;\] If  \[{{B}_{V}}={{B}_{H,}}\] then \[\tan \varphi =1\]or \[\varphi ={{45}^{o}}\]


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