CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

A ray of light is coming along the line which is parallel to y-axis and strikes a concave mirror whose intersection with the XY-plane is a parabola (x4)2=4(y+1).

After reflection, the ray must pass through the point?

A
(4,1)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
(0,1)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
(4,1)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C (4,1)
The equation of axis of the parabola is x4=0 which is parallel to y-axis.
So, the ray of light is parallel to the axis of the parabola.
We know that nay ray parallel to the axis of a parabola passes through the focus after reflection. The ray through the point (4,1)

flag
Suggest Corrections
thumbs-up
0
mid-banner-image
mid-banner-image
Join BYJU'S Learning Program
Select...
similar_icon
Related Videos
thumbnail
lock
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
Select...