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

\(\lambda\) के सभी वास्तविक मानों का समुच्चय, जिनके लिए वृत्तों \(x^{2}+y^{2}-4 x-4 y+6=0\) तथा \(x^{2}+y^{2}-10 x-10 y+\lambda=0\) पर ठीक दो उभयनिष्ठ स्पशरेखाएँ खींची जा सकती हों, का जो अंतराल है, वह है

  1. A \((12, 32)\)
  2. B \((18, 42)\)
  3. C \((12, 24)\)
  4. D \((18, 48)\)
Verified Solution

Answer & Solution

Correct Answer

(B) \((18, 42)\)

Step-by-step Solution

Detailed explanation

The equation of the circles are \({x^2} + {y^2} - 10x - 10y + \lambda = 0\,\,\,\,\,\,\,......\left( 1 \right)\) and \({x^2} + {y^2} - 4x - 4y + 6 = 0\,\,\,\,\,\,\,......\left( 2 \right)\) \({C_1} = \,\) center of \(\left( 1 \right) = \left( {5,5} \right)\) \({C_2} = \,\) center…
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