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JEE Mains · Maths · STD 11 - 10.1 circle and system of circle

यदि वृत \(x^2+y^2-2 g x+6 y-19 c=0, g, c \in R\) बिंदु \((6,1)\) से होकर जाता है तथा इसका केन्द्र रेखा \(x -2 cy =8\), पर है, तो वृत्त द्वारा \(x\)-अक्ष पर बनाए गए अंतः खंड की लंबाई है-

  1. A \(\sqrt{11}\)
  2. B \(4\)
  3. C \(3\)
  4. D \(2 \sqrt{23}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(2 \sqrt{23}\)

Step-by-step Solution

Detailed explanation

Given circle \(x^{2}+y^{2}-2 g x+6 y-19 c=0\) Passes through \((6,1)\) \(12\,g +19 c =43\) Centre \(( g ,-3)\) lies on given line So, \(g +6 c =8\) Solve equation \((1)\) and \((2)\) \(c =1\) and \(g =2\) equation of circle \(x ^{2}+ y ^{2}-4 x +6 y -19=0\) Length of intercept…
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