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Physics, 20.02.2020 03:16 Nathaliasmiles

Follow these steps to solve this problem: A very thin oil film (noil=1.25) floats on water (nwater=1.33). What is the thinnest film that produces a strong reflection for green light with a wavelength of 500 nm?

1.Which of the following equations should be used to find the minimum thickness t of the oil film that satisfies the conditions of the problem? Let λ be the wavelength of light in air and n the index of refraction of the thin film

. a. 2t=mλn(m=0,1,2,...) for constructive interference.

b.2t=(m+12)λn(m=0,1,2,...) for destructive interference.

c.2t=(m+12)λn(m=0,1,2,...) for constructive interference.

d. 2t=mλn(m=0,1,2,...) for destructive interference.

2. What is the minimum (non-zero) thickness t of the film that produces a strong reflection for green light with a wavelength of 500 nm?

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