Show that if two plane mirrors meet at an angle 1060 , a single ray reflected successively from both mirrors is deflected through an angle of 2 1060 independent of the incident angle Assume 1060 90o and those only two reflections, one from each mirror, take place ...

For the first reflection at A the angle of incidence is the angle of reflection For the sec ...

Show that if two plane mirrors meet at an angle Ф, a single ray reflected successively from

Question:

Show that if two plane mirrors meet at an angle Ф, a single ray reflected successively from both mirrors is deflected through an angle of 2Ф independent of the incident angle. Assume Ф < 90o and those only two reflections, one from each mirror, take place.