JEE Main & Advanced Mathematics Three Dimensional Geometry Question Bank Plane

  • question_answer
    The value of k for which the planes \[3x-6y-2z=7\] and \[2x+y-kz=5\] are perpendicular to each other, is                                                               [MP PET 1992]

    A)            0

    B)            1

    C)            2

    D)            3

    Correct Answer: A

    Solution :

                Planes are perpendicular, if \[6-6+2k=0\,\,\Rightarrow \,\,k=0\].

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