Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A parabolic mirror is kept along y 2 = 4x and two light rays parallel to its axis, are reflected along one straight line. If one of the incident light rays is at 3 units distance from the axis, then the distance of other incident ray from axis will be
A
B
C
D
None
Text Solution
Verified by ExpertsThe correct answer is:
B
Let incident rays are PA and QB. After
election both rays passes through focus (1, 0),
∴ AB is focal chord.
Let point A is (at 2 , 2at)
a = 1
∴ 2t = 3 (given)
t = 
So point B will be 
Distance of B from axis = 
= 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If a double ordinate of the parabola be of length , then the angle between the lines joining the …
PQ is a double ordinate of the parabola . The locus of the points of trisection of PQ is
If the vertex of a parabola be at origin and directrix be , then its latus rectum is
The latus rectum of a parabola whose directrix is and focus is (3, – 4), is
The points on the parabola whose ordinate is three times the abscissa are
The points on the parabola whose focal distance is 4, are