You notice a thin layer of oil floating on the surface of a water puddle. Suppos

Question

You notice a thin layer of oil floating on the surface of a water puddle. Suppose that sunlight strikes the puddle from nearly directly overhead, and also that you are viewing the puddle from nearly directly above the puddle. You see several different regions of bright color reflected from the oil - the color varies as the oil's thickness varies. In one particular region, the oil appears to be bright green (?air= 555 nm). If nair = 1.00, noil = 1.45, and nwater = 1.33, how thick (in nanometers) is the oil layer in that region? Since there are an infinite number of solutions, give the three thinnest answers.

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Explanation / Answer

we know from the relation

n = (c_air/c_material)

where n is refractive index,c_air is speed of light in air and c_material is speed of light in material

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