Solve the following questions:
Question I: What is the minimum thickness of a soap bubble film with index of refraction 1.33 which would reflect most brightly red light of wavelength 650 nm?
Question II: What is the minimum thickness of an anti-reflecting coating of index of refraction 1.4 on a glass lens of index 1.5 which would eliminate green light of wavelength 550 nm?
Please show how you obtained the answer.