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Question: Answered & Verified by Expert
If the vertex of a parabola be at origin and directrix be $x+5=0$, then its latus rectum is
MathematicsParabolaJEE Main
Options:
  • A $5$
  • B $10$
  • C $20$
  • D $40$
Solution:
2301 Upvotes Verified Answer
The correct answer is: $20$
$S \equiv(5,0)$. Therefore, latus rectum $=4 a=20$.

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