Mathematics · 2017
JEE Main · 9 April 2017, Shift 1 · Q81
If y= m x+ c is the normal at a point on the parabola y^2=8 x whose focal distance is 8 units, then | c | is equal to:
If $\displaystyle y=\mathrm{m} x+\mathrm{c}$ is the normal at a point on the parabola $\displaystyle y^2=8 x$ whose focal distance is $\displaystyle 8$ units, then $\displaystyle |\mathrm{c}|$ is equal to :
Official answer
(3)
$\displaystyle 10 \sqrt{3}$
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JEE Main 2017 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.