Mathematics · 2019
JEE Main · 9 April 2019, Shift 1 · Q81
If one end of a focal chord of the parabola, y^2=16 x is at (1, 4), then the length of this focal chord is:
If one end of a focal chord of the parabola, $\displaystyle y^2=16 x$ is at $\displaystyle (1, 4)$, then the length of this focal chord is :
Official answer
(1)
$\displaystyle 25$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.