Question

A ray of light hits a plane mirror lying across a floor 2m from the vertical wall. The angle of incidence of the ray is 40 degrees. At what point on the wall will the reflected light fall? Express the answer in terms of height from the floor.

Answer 1

angle of incidence (and of reflection) is measured from the normal to the surface

draw a sketch to see the right triangle to be solved

Answer 2

How can i express this in terms of height?

Answer 3

My answer is 0.99m am i correct?

Answer 4

h / 2m = tan(50º)