White light, which is a mix of all visible wavelengths in the range of 400 nm to 700 nm, reflects at normal incidence from the top and bottom surface of a glass plate with index of refraction n= 1.52. There is air above and below the plate. Constructive interference observed for light whose wavelenth in air is 477.00 nm. What is the thickness of the plate if the next wavelength for which there is constructive interference is 540.6nm?