A soap film is illuminated by while light incient at an angle of `30^(@)`. The reflected light is
Channel: Doubtnut
Date: 02/11/2021

A soap film is illuminated by while light incient at an angle of `30^(@)`. The reflected light is examined by a spectroscope in which a dark band corresponding to wavelength 6000Å is found . Calculate the minimum thickness of the film. Given refractive index of film`=(4)/(3)`