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JEE Mains · Maths · STD 11 - 10.2 parabola,ellipse,hyperbola

समीकरण \(x -\sqrt{2} y +4 \sqrt{2}=0\) को रखने वाले परवलय \(x ^{2}=4 y\) की जीवा की लम्बाई होगी

  1. A \(3\sqrt 2\)
  2. B \(2\sqrt {11}\)
  3. C \(8\sqrt 2\)
  4. D \(6\sqrt 3\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(6\sqrt 3\)

Step-by-step Solution

Detailed explanation

\(x = \sqrt 2 y - 4\sqrt 2 \) \({x^2} = 4y\) Solving we get point of intersection \(A\left( { - 2\sqrt 2 ,2} \right),B\left( {4\sqrt 2 ,8} \right)\) \(\therefore AB = \sqrt {{{\left( {6\sqrt 2 } \right)}^2} + {6^2}} = 6\sqrt 3 \)
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