JEE Main & Advanced Mathematics Three Dimensional Geometry Question Bank Plane

  • question_answer
     The length of the perpendicular from the origin to the plane \[3x+4y+12z=52\]is [MP PET 2000; Pb. CET 2001]

    A)            3

    B)  ?4

    C)            5

    D)            None of these

    Correct Answer: D

    Solution :

                \[p=\left| \,\frac{-52}{\sqrt{9+16+144}}\, \right|=\left| \,\frac{-52}{13}\, \right|\,\,=\,\,|-4|\] = 4.


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