University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 33 - The Nature and Propagation of Light - Problems - Exercises - Page 1106: 33.25


$0.375I_0 $.

Work Step by Step

The first polarizer filters out half the incident light. $$I_1=\frac{1}{2}I_o$$ The fraction filtered out by the second polarizer depends on the angle between the axes of the two filters, which is 30 degrees. $$I_2=I_1cos^2\theta=\frac{1}{2}I_o cos^230^{\circ}=0.375I_0 $$
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