Question

Mirror has gradient m, and incoming ray has gradient a we express the gradient of the outgoing ray in terms of a and m am2 +2- a 1 +2am -m2 Now consider the parabola (on its side) 4x = (e) If the incorning ray is horizontal and hits the mirror at the point (4,4), find the gradient of the outgoing ray. (f) Show that the outgoing ray passes through the point (1,0) (g) Show that if the incoming ray is horizontal, no matter where it hits the parabolic mirror, the reflection will always pass through the point

Answer 1

2. 2. ar L4 14- 4- f) 3 29-12-4-x-16 4 2 4- nirror.

4