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JEE Main & Advanced Mathematics Conic Sections Question Bank Parabola

  • question_answer
    Tangents drawn at the ends of any focal chord of a parabola \[{{y}^{2}}=4ax\] intersect in the line

    A)            \[y-a=0\]                                   

    B)            \[y+a=0\]

    C)            \[x-a=0\]                                   

    D)            \[x+a=0\]

    Correct Answer: D

    Solution :

               The tangents (at the end points of focal chord) cut orthogonally at the directrix i.e., \[x=-a\]or \[x+a=0\].


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