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JEE Mains · Maths · STD 11 - 10.2 parabola,ellipse,hyperbola

यदि एक अतिपरवलय के संयुग्मी अक्ष (conjugate axis) की लंबाई \(5\) है तथा इसकी नाभियाँ के बीच की दूरी \(13\) है, तो इस अतिपरवलय की उत्केंद्रता है 

  1. A \(\frac{{13}}{{12}}\)
  2. B \(2\)
  3. C \(\frac{{13}}{{6}}\)
  4. D \(\frac{{13}}{{8}}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{{13}}{{12}}\)

Step-by-step Solution

Detailed explanation

\(2b = 5\) and \(2ae = 13\) \({\left( {ae} \right)^2} = {a^2} + {b^2}\) \( \Rightarrow {a^2} = {\left( {ae} \right)^2} - {b^2} = \frac{{169}}{4} - \frac{{25}}{4}\) \( \Rightarrow a = 6\) \(e = \frac{{ae}}{a} = \frac{{13}}{{12}}\)
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