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JEE Mains · Maths · STD 12 - 8. Application and integration

यदि वक्रों \(y = kx ^{2}\) तथा \(x = ky ^{2},( k >0)\) के बीच घिरे क्षेत्र का क्षेत्रफल \(1\) वर्ग इकाई हैं, तो \(k\) बराबर है

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

Answer & Solution

Correct Answer

(B) \(\frac{1}{{\sqrt 3 }}\)

Step-by-step Solution

Detailed explanation

\(y=k x^{2}, x=k y^{2}\) \(\Rightarrow x=k\left(k^{2} x^{4}\right) \) \(\Rightarrow x=0\) or \(x^{3}=\left(\frac{1}{k}\right)^{3}\) \( \Rightarrow x=\frac{1}{k}, 0\) Point of intersection are \(\left(\frac{1}{\mathrm{k}}, \frac{1}{\mathrm{k}}\right)\) and \((0,0)\) Area…
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