A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin fi lm of liquid fl oats on the..
A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin fi lm of liquid fl oats on the gasoline and has a refractive index that is between 1.00 and 1.40. Light that has a wavelength of 625 nm (in vacuum) shines perpendicularly down through the air onto this fi lm, and in this light the fi lm looks bright due to constructive interference. The thickness of the fi lm is 242 nm and is the minimum nonzero thickness for which constructive interference can occur. What is the refractive index of the fi lm? Apr 25 2022 08:12 PM
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