Estimate the thickness of the film

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Reference no: EM13304091

A glass plate (n=1.62) is coated with a thin, transparent film (n=1.27). Light reflected at normal incidence is observed as the wavelength is varied continuously. Constructive interference occurs for light at 680 nm, while destructive interference occurs at 544 nm (with no other incidences between these wavelengths).

a. Find the thickness of the film

b. If a different coating (n=1.7) is applied to the same thickness as you found in part (a) onto a clean sheet of the same glass, what, if any, visible wavelengths of light would show constructive interference?

Reference no: EM13304091

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