Soap film is thick and lies on a glass plate

Reference no: EM13663878

A soap film (n = 1.33) is 273nm thick and lies on a glass plate (n = 1.52). Sunlight, whose wavelengths (in vacuum) extend from 380 to 750 nm, travels during the air and strikes the film perpendicularly. For which wavelength in this range does destructive interference reason the film to look dark in reflected light?

Reference no: EM13663878

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