A transparent oil of index of refraction 1.29 spills on the surface of water (index of refraction 1.33), producing a maximum of reflection with normally incident violet light (wavelength 400 nm in air). Assuming the maximum occurs in the first order, determine the thickness of the oil slick.
To observe a maximum, the waves reflected from the top surface of oil (ie, air-oil interface ) and from the bottom surface (oil-water) must interfere constructively.
To get constructive interference, the ...
This solution gives all mathematical steps required to fully understand the solution and enable you to solve similar problems.