Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 25, Problem 76PCE
Predict/Calculate A beam of vertically polarized light encounters two polarizing filters, as shown in Figure 25-45. (a) Rank the three cases A B and C, in order of increasing transmitted intensity Indicate ties where appropriate (b) Calculate the transmitted intensity for each of the cases in Figure 25-45, assuming that the incident intensity is 55.5 W/m2 verify that your numerical results agree with the rankings in part (a).
Figure 25-45
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Unpolarized light passes through two ideal polarizers in turn with polarization axes at 31.5° to each other. What is the fraction of the incident light intensity that is transmitted?
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Unpolarized light, of intensity Io is incident on a pair of polarizers as shown below. The trans-
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Unpolarized
light,
intensity lo
X
Observer
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observer. If this is not possible, say so explicitly.
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polarizer is rotated by an angle 0 about the direction of the incident light.
polarizer
transmitted light
incident light
transmission axis
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(b) On the axes below, sketch graphs to show the variation of the transmitted intensity I
with 0
(i) if the incident light is horizontally polarized.
() if the incident light is unpolarizéd.
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90°
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Chapter 25 Solutions
Physics (5th Edition)
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