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Question: Answered & Verified by Expert
If for a plane, the intercepts on the coordinate axes are 8, 4, 4 then the length of the perpendicular from the origin on to the plane is
MathematicsThree Dimensional GeometryJEE Main
Options:
  • A $8 / 3$
  • B $3 / 8$
  • C 3
  • D $4 / 3$
Solution:
1654 Upvotes Verified Answer
The correct answer is: $8 / 3$
Equation of plane is, $\frac{x}{8}+\frac{y}{4}+\frac{z}{4}=1 \Rightarrow x+2 y+2 z=8$
Length of the perpendicular from the origin on the plane
$=\left|\frac{-8}{\sqrt{1^2+2^2+2^2}}\right|=\frac{8}{3}$

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