Two plane mirrors and are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of at a point just inside one end of . The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflection (including the first one) before it emerges out is

Two plane mirrors and are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of at a point just inside one end of . The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflection (including the first one) before it emerges out is

1 Answer

127 votes

From the following ray diagram

Therefore maximum number of reflections are 30

127 votes

127