Light n¡ < nf Thin film n2< nf A thin film with index of refraction nf separates two materials, each of which has an index of refraction less than nf. A monochromatic beam of light is incident normally on the film, as shown above. If the light has wavelength À within the film, maximum constructive interference between the incident beam and the reflected beam occurs for which of the following film thicknesses? (A 31. B 21 (D

Light n¡ < nf Thin film n2< nf A thin film with index of refraction nf separates two materials, each of which has an index of refraction less than nf. A monochromatic beam of light is incident normally on the film, as shown above. If the light has wavelength À within the film, maximum constructive interference between the incident beam and the reflected beam occurs for which of the following film thicknesses? (A 31. B 21 (D