Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 24 - The Wave Nature of Light - Problems - Page 710: 63

Answer

48.1 percent

Work Step by Step

Let the initial intensity be $I_o$. Use equation 24–5. For the first polarizer, the angle between the light’s polarization axis and the polarizer’s axis is $21.0^{\circ}$. After the light emerges it is polarized along that axis, and when it passes through the second polarizer, the angle between the light’s polarization axis and the second polarizer’s axis is $42.0^{\circ}$. Use Eq. 24–5 twice. $$I_1=I_ocos^2\theta=I_o cos^2 21.0^{\circ}$$ $$I_2=I_1cos^2\theta= I_o (cos^2 21.0^{\circ})(cos^2 42.0^{\circ})=0.481I_o$$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.