Question 7 of 10 0.1/1 E Reection by thin layers. In the gure, light is incident perpendicularly on a thin layer of material 2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) The waves of rays r1 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 mg, the type of interference, and the thinlayer thickness L in nanometers. Give the wavelength that is in the visible range. I11 n2 I13 Type l. A 1.50 1.61 1.40 max 288