On a rainy day, when the pavement is covered by water, a thin film of oil has gathered ontop of the water. The oil layer (n = 1.25) is sandwiched between air (n = 1) on top andwater (n = 1.333) below. a) When viewed at normal incidence (perpendicular to thesurface), the film of oil reflects most strongly red light with a wavelength of 640 nm.Calculate three possible values for the thickness of the film. b) When viewed at normalincidence, the same film of oil does not reflect any green light with a wavelength of512 nm. Calculate the exact thickness of the film.

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Answered: On a rainy day, when the pavement is…

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