1. A light wave with a wavelength of is normally incident (i.e., hits at 90) on a thin layer of oil (n = 1.46) on water (1.33). Assign a value to (475 nm)

1. What is the wavelength of the light wave as it travels through the oil (3 points)?

1. Some of the light reflects at the air-oil boundary, and some of the light reflects at the oil-water boundary. At which boundaries will the reflected light wave experience a phase shift? Explain your reasoning (3 points).