A light beam is incident From a medium with n1 through a thin layer of a substance with n; into a medium with n3 (layer darkness in the gure does not indicate the relative magnitudes of the Jndi'ces of refraction). Which one of the followmg inuences the wavelength for which constructive interference of the reflected beam occurs7 0 Whether n1 is bigger or smaller than n3. n n 0 Whether n1 is bigger or smaller than n2. 0 Only the thickness of the middle layer, but not its index of refraction. 0 Only the thickness and the index of refraction of the middle layer. 0 Only the index of refraction of the middle layer, but not its thickness. Submit Answer Tries 0/2 If n1:1.2, n2:2.1, and n3:1.6, and the thickness of the middle layer is 80 nm, for which (visible) wavelength does the reflected beam undergo constructive interference? : Submit Answer Tries 0/6 If instead n2=1.6 and n3=2.1, which one of the folluwing would be true for the same wavelength? 0 Interference would now be destructive. O Interference would still be constructive. 0 Neither constructive nor destructive. Submit Answer Tries 0/2