Mathematics · 2021
JEE Main · 31 August 2021, Shift 1 · Q74
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…
The length of the latus rectum of a parabola, whose vertex and focus are on the positive $\displaystyle x$-axis at a distance R and S (> R) respectively from the origin, is :
Official answer
(4)
$\displaystyle 4(S-R)$
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