1. The problem statement, all variables and given/known data Hi, I've got this question that is asking why mirrors placed in parallel will produce an infinite number of images. 2. Relevant equations 3. The attempt at a solution What I think is that the image formed in the first mirror would reflect off the second mirror, forming a second image which would then reflect off the first mirror and so on. The problem here is that I have no idea if this is correct (I couldn't find anything in my textbox or on the Net) and also , if it is correct, I need a clearer way of explaining it. Thanks in advance!