Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let 
be the mirror image of the point 
with respect to the plane 
and let 
be a point of this plane. Then the square of the length of the line segment 
is
Text Solution
Verified by ExpertsThe correct answer is:
72
(72) Since 
lies on the plane 
.
Therefore, 
Now,
dr's of line QS
are 
equation of line QS is
(say)
lies in the plane
.
Since, 
is mid-point of QS.
Therefore, co- ordinated of 
are 
.
So, 
.
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