Question

A Ray of light incident at a 50° on the middle of one of the two Mirrors arranged at an angle 60° between them the Raven touches the second measure get reflected back to the first made by making an angle of incidence of

Answer 1

All angles in degrees.

By definition, C=60 and a=50. Then b=90-a=40 ---> b'=40

C+b'+d=180 ---> d=180-C-b'=180-60-40=80

Then e=90-d=90-80=10 ---> e'=10

And C'=180-d-e-e'=180-80-10-10=80

Thus, in the triangle XYZ we have C+d+e+e'+f=180 --->

f=180-C-d-e-e'=180-60-80-10-10=20

And the angle of incident F is 70°