Q. The arithmetic mean of the ordinates of the feet of the normals from $(3,\ 5)$ to the parabola $y^{2} = 8x$ is
A) 4
B) 0
C) 8
D) None of these
Explanation
(b)
Sum of ordinates of feet of normals drawn from a point is zero
So, there arithmetic mean is zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.