02.43: A light ray is incident fi*m 67dnr2y-d4btprnormal to a thin layer of glass. Given the figure, what is the mmd ynr*pb 6ir 2tdf-47inimum thickness of the glass that gives the reflected light an orangish color ( $\lambda_{air}$= 600 nm) ?

  05.43: Light is incidentvkiv wnu0 (m71emy6d; normal to a thin layer of soap. Given the figure, what is the minimum thickness of ne w06(kvm7mu ;1dyivthe soap film that gives the soap a bluish color ($\lambda$ = 500 nm)?

  15.38: A thin film of alco w3yj5m0 h*bap e,enus1z,m:ihol ($n_{alcohol}$= 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?