White light reflects at normal incidence from the top and bottom surfaces of a glass plate 1n = 1.522. There is air above and below the plate. Constructive interference is observed for light whose wavelength in air is 477.0 nm. What is the thickness of the plate if the next longer wavelength for which there is constructive interference is 540.6 nm?

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Q: How thick is the oil film

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Q: A soap bubble (n =1.33) is floating in air. If the thickness of the bubble wall is 115 nm, what is…

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Q: Two interfering light beams with l2= 122 l1. The fringe contrast (Visibility) of the resulting…

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