Reflection by thin layers. In the figure, light is incident perpendicularly on a thin layer of material2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) The waves of rays r and r2 interfere, and here we consider the type of interference to be either maximum (max) or minimum (min). The table below provides the indexes of refraction n1, n2, and n3, the type of interference, and the thinlayer thickness L in nanometers. Give the wavelength that is in the visible range. ng

Reflection by thin layers. In the figure, light is incident perpendicularly on a thin layer of material2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) The waves of rays r and r2 interfere, and here we consider the type of interference to be either maximum (max) or minimum (min). The table below provides the indexes of refraction n1, n2, and n3, the type of interference, and the thinlayer thickness L in nanometers. Give the wavelength that is in the visible range. ng