Physics, 02.12.2019 22:31 alyshaaa36

Atank of gasoline (n = 1.40) is open to the air (n = 1.00). a thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. light that has a wavelength of 626 nm (in vacuum) shines perpendicularly down through the air onto this film, and in this light the film looks bright due to constructive interference. the thickness of the film is 290 nm and is the minimum nonzero thickness for which constructive interference can occur. what is the refractive index of the film?
nfilm = 1your answer is incorrect. i did t=(m)(wavelengthfilm)/(2) solving for the wavelegth of filmtheni did: wavelength film = wavelength vaccum / n and my n comes out as 1.18 which is the wrong answer can anyone ? ?

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Atank of gasoline (n = 1.40) is open to the air (n = 1.00). a thin film of liquid floats on the gaso...

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