Question

When light rays are reflected repeatedly from two parallel mirrors, the intensity of light rays decreases after some reflections. Why? Name the phenomenon of light related to the situation.

Answer 1

see when a ray of light passes from rarer to denser medium, critical angle is less,hence total internal refraction take place and intensity decreases because mirrors are paralel if the wont be paralel,it would not take place.And this phenomemon is Angle Of Reflection