JEE Main & Advanced Mathematics Conic Sections Question Bank Hyperbola

  • question_answer
    The vertices of a hyperbola are at (0, 0) and (10, 0) and one of its foci is at (18, 0). The equation of the hyperbola is

    A)            \[\frac{{{x}^{2}}}{25}-\frac{{{y}^{2}}}{144}=1\]                          

    B)            \[\frac{{{(x-5)}^{2}}}{25}-\frac{{{y}^{2}}}{144}=1\]

    C)            \[\frac{{{x}^{2}}}{25}-\frac{{{(y-5)}^{2}}}{144}=1\]                    

    D)            \[\frac{{{(x-5)}^{2}}}{25}-\frac{{{(y-5)}^{2}}}{144}=1\]

    Correct Answer: B

    Solution :

                       \[2a=10\], \ \[a=5\] \[ae-a=8\]or\[e=1+\frac{8}{5}=\frac{13}{5}\] \\[b=5\sqrt{\frac{{{13}^{2}}}{{{5}^{2}}}-1}=5\times \frac{12}{5}=12\] and centre of hyperbola\[\equiv (5,\,0)\]                                             \\[\frac{{{(x-5)}^{2}}}{{{5}^{2}}}-\frac{{{(y-0)}^{2}}}{{{12}^{2}}}=1\].


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