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JEE Main & Advanced Mathematics Conic Sections Question Bank Parabola

  • question_answer
    If (2, 0) is the vertex and y-axis the directrix of a parabola, then its focus is       [MNR 1981]

    A)            (2, 0)                                         

    B)            (­?2, 0)

    C)            (4, 0)                                         

    D)            (?4, 0)

    Correct Answer: C

    Solution :

               Vertex \[=(2,0)\]Þ focus is \[(2+2,\,0)=(4,\,0)\].


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