Part A A plastic film with index of refraction 1.70 is applied to the surface of a car window to increase the reflectivity and thus to keep the car's interior cooler. What minimum thickness is required if light of wavelength 550 nm in air reflected from the two sides of the film is to interfere The window glass has index of refraction 1.52. constructively? Express your answer with the appropriate units. HA ? h = Value Units Submit Request