JEE Main 2021MathematicsParabolaEasyMCQ

JEE Main 2021 — Parabola Question with Solution

JEE Main 2021 (31 Aug Shift 1)

Question

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 :

Choose an option

Show full solutionCorrect option: C
Correct answer
C4(S-R)

Step-by-step explanation

A parabola, whose vertex and focus are on the positive x- axis at a distance R and S(>R) respectively from the origin.

y2=4a(x-R)
y2=4(S-R)(x-R)
Length of Latus rectum=4(S-R)

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About this question

This is a previous-year question from JEE Main 2021, covering the Parabola chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.