MCQ
The eccentricity of the hyperbola ${x^2} - {y^2} = 25$ is
  • $\sqrt 2 $
  • B
    $1/\sqrt 2 $
  • C
    $2$
  • D
    $1 + \sqrt 2 $

Answer

Correct option: A.
$\sqrt 2 $
a
(a) $\frac{{{x^2}}}{{25}} - \frac{{{y^2}}}{{25}} = 1$.

Eccentricity $ = \sqrt 2 $ as $a = b$.

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