Question

A girl has two mirrors installed on adjacent walls in her bedroom so that the mirrors meet in the corner. When she stands in front of the mirrors, she can see three images of herself. Explain how these three images are formed.

Answer 1

Come in at a 45o angle toward the vertex, reflect at 45 and then again at 45 and you will have returned, creating two virtual images because you can do tis starting toward the top or toward the side.

Answer 2

Well, maybe only one more virtual image, come to think of it.