Answered: Unpolarized light is incident on a…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter34: Maxwell’s Equations And Electromagnetic Waves

Section: Chapter Questions

Problem 63PQ

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Question

Unpolarized light is incident on a stack of three polaroid filters. The transmission axis of the first is vertical. The transmission axis of the second makes an angle of 45 degrees with the vertical. The transmission axis of the third is horizontal. How does the intensity of the light coming out of this stack compare to the original intensity?

1) no light exits the stack

2) it has exactly half the intensity of the incident light

3) it has the same intensity as the incident light

4) it has less than half the intensity of the incident light

Expert Solution

Step 1

$L e t t h e i n t e n s i t y o f u n p o l a r i z e d l i g h t = I T h e t r a n s m i s s i o n a x i s o f f i r s t p o l a r o i d = v e r t i c a l T h e a n g l e o f t r a n s m i s s i o n a x i s o f s e c o n d p o l a r o i d = 45 d e g r e e w i t h t h e v e r t i c a l T h e a n g l e o f t r a n s m i s s i o n a x i s o f t h i r d p o l a r o i d = h o r i z o n t a l$

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