(2) A source S of monochoramtic light and a detector D are both located in air a distance h above a horizontal plane sheet of glass, and are separated by a distance x as shown. (a) Taking the phase change on reflection into account, write down the conditions for the constuctive and destructive interference.(b) For * = 14cm ,and h = 24cm, what is the longest wavelength for which there will be a constructive interference? (5-Points) D h Glass Plate