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

यदि \(y = m _1 x + c _1\) तथा \(y = m _2 x + c _2, m _1 \neq m _2\), वृत्त \(x ^2+ y ^2=2\) तथा परवलय \(y ^2= x\) की उभयनिप्ट स्पर्श रेखाए है तो \(8\left| m _1 m _2\right|\) का मान होगा

  1. A \(3+4 \sqrt{2}\)
  2. B \(-5+6 \sqrt{2}\)
  3. C \(-4+3 \sqrt{2}\)
  4. D \(7+6 \sqrt{2}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(-4+3 \sqrt{2}\)

Step-by-step Solution

Detailed explanation

\(C_{1}: x^{2}+y^{2}=2\) \(C_{2}: y^{2}=x\) Let tangent to parabola be \(y = mx +\frac{1}{4 m }\). It is also a tangent of circle so distance from centre of circle \((0,0)\) will be \(\sqrt{2}\).…
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