Mathematics · 2013
JEE Main · 22 April 2013, Shift 1 · Q75
Let Q be the foot of perpendicular from the origin to the plane 4 x-3 y+z+13=0 and R be a point (-1,1,-6) on the plane. Then length QR is:
Let Q be the foot of perpendicular from the origin to the plane $\displaystyle 4 x-3 y+z+13=0$ and $\displaystyle R$ be a point $\displaystyle (-1,1,-6)$ on the plane. Then length QR is :
Official answer
(3)
$\displaystyle 3 \sqrt{\frac{7}{2}}$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.