Recent content by Supergabson

What formula should I use that has the dimensions of the glass? I have no idea how the dimensions of the glass can lead me to the right answer

I have this question for my physics assignment. Homework Statement Two plane glass plates 10.0 cm long, touching at one end , are separated at the other end by strip of paper 1.5x10^{-3} mm thick. When the plates are illuminated by monochromatic light, the avreage distance between...