College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 89

Plane-polarized light is incident on a single polarizing disk, with the direction of E 0 parallel to the direction of the transmission axis. Through what angle should the disk be rotated so that the intensity in the transmitted beam is reduced by a factor of (a) 2.00, (b) 4.00, and (c) 6.00