jee-main 2021 Q65

jee-main · India · session4_31aug_shift1 Circles Circle Equation Derivation

The length of the latus rectum of a parabola, whose vertex and focus are on the positive $x$-axis at a distance $R$ and $S ( > \mathrm { R } )$ respectively from the origin, is :
(1) $2 ( S - R )$
(2) $2 ( S + R )$
(3) $4 ( S - R )$
(4) $4 ( S + R )$

The length of the latus rectum of a parabola, whose vertex and focus are on the positive $x$-axis at a distance $R$ and $S ( > \mathrm { R } )$ respectively from the origin, is :\\
(1) $2 ( S - R )$\\
(2) $2 ( S + R )$\\
(3) $4 ( S - R )$\\
(4) $4 ( S + R )$

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