College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 66

Three polarizers, centered on a common axis and with their planes parallel to one another, have transmission axes oriented at angles of 1 , 2 , and 3 from the vertical, as shown in Figure P24.59. Light of intensity I i , polarized with its plane of polarization oriented vertically, is incident from the left onto the first polarizer. What is the ratio I f / I i of the final transmitted intensity to the incident intensity if (a) 1 = 45°, 2 = 90°, and 3 = 0° (b) 1 = 0°, 2 = 45°, and 3 = 90°