Thin-film method A thin film with an index of refraction that is significantly larger than 1.55 is used as a non-reflective coating on a glass lens that has an index of refraction of 1.55. Our goal in this problem is to find the smallest non-zero thickness (t.,;,) of the film that will produce completely destructive interference for reflected light that has a particular wavelength in vacuum. (If we get destructive interference for reflected light, then the light must be transmitted into the glass lens instead, which is what you want for a pair of glasses or a camera.) Assume the light is traveling in air before encountering the film, and that the light strikes the film at normal incidence. This problem is set up to help you work through the problem using a systematic approach, consistent with the five-step method outlined in class. @ Part (a) o Homework Answered Due Apr 23rd, 12:15 PM First, what is /A, the shift for the wave reflecting from the air-coating interface? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. _________________________________________________________________________________________________________________________ Afitm \" Open in Reading View Your answer : \f\f@ Part (d) o Homework Answered Due Apr23rd, 12:15 PM Use these numbers: the coating has an index of refraction of 1.73, the glass has an index of refraction of 1.55, and the light has a wavelength in vacuum of 520 nm. Solve the equation to find the minimum non-zero film thickness to produce completely destructive interference for the light. nm Type your numeric answer and submit 75.1 X You are incorrect Answered - Incorrect 4 attempts left