A light ray emits from the origin making an angle 
with the positive 
-axis. After getting reflected by the line 
, if this ray intersects 
-axis at 
, then the abscissa of 
is
Text Solution
Verified by ExpertsB
Equation of ray is
Image of 
in the line 
is lies on reflected ray.
Point of Intersection of lines 
and 
is 
Now Reflected Ray is same as line passing through PM.
Slope of PM 
Equation of PM whose slope is 
and passing through 
.
ray, Intersects 
-axis at 
abscissa of 
is 
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