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Question: Answered & Verified by Expert
A line L lies in the plane 2x-y-z=4 such that it is perpendicular to the line x-22=y-31=z-45. The line L passes through the point of intersection of the given line and given plane. Which of the following points does not satisfy line L?
MathematicsThree Dimensional GeometryJEE Main
Options:
  • A -5,-12,-272
  • B 3,1,6
  • C 0,292,-372
  • D -4,52,-292
Solution:
1021 Upvotes Verified Answer
The correct answer is: 3,1,6
Any point on given line is 2λ+2,λ+3,5λ+4
This must satisfy the equation of the plane
4λ+4-λ-3-5λ-4=4
-2λ=7λ=-72
So, the coordinates of point are -5,-12,-272
A normal vector to given plane n=2i^-j^-k^
A vector parallel to given line b=2i^+j^+5k^
A vector parallel to required line
i^j^k^2-1-1215=i^-4-j^12+k^4
=-4i^+3j^-k^
Equation of required line is
x+51=y+123=z+272-1
 

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