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

यदि वृत्त \(x ^{2}+ y ^{2}=1\) की एक स्पर्शरिखा निर्देशांक अक्षो को भिन्न बिंदुओं \(P\) तथा \(Q\) पर प्रतिच्छेद करती है, तो \(PQ\) के मध्यबिंदु का बिंदुपथ (locus) है :

  1. A \(x^2 + y^2 -16x^2y^2 = 0\)
  2. B \(x^2 + y^2 -2x^2y^2 = 0\)
  3. C \(x^2 + y^2 -4x^2y^2 = 0\)
  4. D \(x^2 + y^2 -2xy = 0\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(x^2 + y^2 -4x^2y^2 = 0\)

Step-by-step Solution

Detailed explanation

Let the mid point be \(S(h,k)\) \(\therefore P\left( {2h,0} \right)\) and \(Q\left( {0,2k} \right)\) equation of \(PQ:\frac{x}{{2h}} + \frac{y}{{2k}} = 1\) \(\therefore PQ\) is tangent to circle at \(R\) (say)…
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