02.43: A light ray is incident normal to a thin layer of gln8)f ok3htv: wass. Given the figure, what is the minimum thickness of the glass that gives the reflected light an orangish colt:)3 fknwovh8or ( $\lambda_{air}$= 600 nm) ?

  05.43: Light is incident normal tpo;u/ynrbf*p +3f .g 6/gkbzg o a thin layer of soap. Given the figure, what is the minimum thickn6n rg +.gpog3;//fkf z*ypbbu ess of the soap film that gives the soap a bluish color ($\lambda$ = 500 nm)?

  15.38: A thin film of alcoholt :jji xip:2tbwcc+ /( ($n_{alcohol}$= 1.35) lies on a flat glass surface ($n_{alcohol}$ = 1.60). When light of wavelength 540 nm is incident normal to the alcohol surface from air, the light is strongly reflected, but when light of wavelength 432 nm is incident normal to the surface from air, the reflected light is minimized. Which one of the following choices could represent the thickness t of the alcohol film?