Atransparent oil with index of refraction 1.28 spills on the surface of water (index of refraction 1.33), producing a maximum of reflection with normally incident green light (wavelength 500 nm in air). assuming the maximum occurs in the first order, determine the thickness of the oil slick.

The thickness of the oil slick is

Explanation:

Given that,

Index of refraction = 1.28

Wave length = 500 nm

Order m = 1

We need to calculate the thickness of oil slick

Using formula of thickness

Where, n = Index of refraction

t = thickness

= wavelength

Put the value into the formula

Hence, The thickness of the oil slick is

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