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

यदि परवलय का शीर्ष \((2,-1)\) तथा इसकी नियता का समीकरण \(4 x -3 y =21\) है, तो इसके नाभिलम्ब की लम्बाई है

  1. A \(2\)
  2. B \(8\)
  3. C \(12\)
  4. D \(16\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(8\)

Step-by-step Solution

Detailed explanation

\(a=\frac{|8+3-21|}{5}=\frac{10}{5}=2\) \(\therefore\) latus rectum \(=4 a=8\)
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