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03/02/2022 7:17 pm
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The length of the latus rectum of a parabola, whose vertex and focus are on the positive x–axis at a distance R and S (>R) respectively from the origin, is
(1) 4(S + R)
(2) 2(S – R)
(3) 4(S – R)
(4) 2(S + R)
1 Answer
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03/02/2022 7:20 pm
Correct answer: (3) 4(S – R)
Explanation:
V → Vertex
F → Focus
VF = S - R
So latus rectum = 4(S – R)