A glass plate (n=1.53) that is 0.485 ` mu` m thick and surrounded by air is illuminated by a beam of white light normal to the plate.
(a) What wavelengths (in air) within the limits of the visible spectrum `(lambda = 400 "to" 700 nm)` are intensified in the reflected beam ?
(b) What wavelengths within the visible spectrum are intensified in the transmitted light?

Answer

`[(a) 424 nm, 594 nm; (b) 495 nm]