J & K CET Engineering J and K - CET Engineering Solved Paper-2004

  • question_answer
    If the normal at ?t? on the parabola \[{{y}^{2}}=4ax\] meets the parabola again at t', then

    A)  \[t'=-t-\frac{2}{t}\]

    B)  \[t'=-t+\frac{2}{t}\]

    C)  \[t'=-t'-\frac{2}{t'}\]

    D)  \[t'+t'+2tt'\]

    Correct Answer: A

    Solution :

    We know that, the normal at the point t meets the parabola \[{{y}^{2}}=4ax\] again at the point t? then \[t'=-t-\frac{2}{t}\]


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