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

વર્તુળ \(x^{2}+y^{2}=2\) અને પરવલય, \(y^{2}=x\) ના બે સામાન્ય સ્પર્શકો જો, \(y= m _{1} x+ c _{1}\) અને  \(y= m _{2} x+ c _{2}, m _{1} \neq m _{2}\) હોય, તો \(8\left| m _{1} m _{2}\right|\) ની કિમત .......... છે.

  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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