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JEE Main & Advanced Mathematics Conic Sections Question Bank Parabola

  • question_answer
    Latus rectum of the parabola \[{{y}^{2}}-4y-2x-8=0\] is

    A)            2     

    B)            4

    C)            8     

    D)            1

    Correct Answer: A

    Solution :

               Given equation,            \[{{y}^{2}}-4y-2x-8=0\] Þ \[{{(y-2)}^{2}}=2(x+6)\]            \[\therefore \]Length of latus rectum = 2.


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