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JEE Main & Advanced Mathematics Conic Sections Question Bank Parabola

  • question_answer
    The focus of the parabola \[{{y}^{2}}=4y-4x\] is              [MP PET 1991]

    A)            (0, 2)                                         

    B)            (1, 2)

    C)            (2, 0)                                         

    D)            (2, 1)

    Correct Answer: A

    Solution :

               \[{{(y-2)}^{2}}=-4x+4\]Þ \[{{(y-2)}^{2}}=-4(x-1)\]            Vertex is (1,2) and focus = (0,2).


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