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

एक वृत जो \((1,-2)\) से होकर जाता है तथा \(x-\) अक्ष \((3,0)\) पर स्पर्श करता है, जिस अन्य बिन्दु से होकर जाता है, वह है

  1. A \((-5,2)\)
  2. B \((2,-5)\)
  3. C \((5,-2)\)
  4. D \((-2,5)\)
Verified Solution

Answer & Solution

Correct Answer

(C) \((5,-2)\)

Step-by-step Solution

Detailed explanation

Let the equation of circle be \((x-3)^{2}+(y-0)^{2}+\lambda y=0\) As it passes through \((1,-2)\) \(\therefore \) \((1-3)^{2}+(-2)^{2}+\lambda(-2)=0\) \(\Rightarrow \quad \lambda=4\) \(\therefore \) equation of circle is \((x-3)^{2}+y^{2}-8=0\) so \((5,-2)\) satisfies equation…
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