hysics 4C- Light and Modern Physics Midterm Exam 2 November 16, 2017 Student Nam

Question

hysics 4C- Light and Modern Physics Midterm Exam 2 November 16, 2017 Student Name Three consecutive ideal polarizing plates are parallel and perpendicular on below. The arrangement is such t 6. a common axis as shown in thve fiare l he polarizing axis of one plate is angled at a 45 from the polarizing axis of the previous plate, that is, 1-45°, 2 90°, and ,-135°. Calculate the lf/4 ratio. The land, are the initial and final intensities, respectively, of a linearly polarized light beam with plane of polarization parallel to the vertical reference direction. The beam crosses the three polarizing plates from left to right as shown in the figure 10 points below

Explanation / Answer

If = Ii(cos245)3

=> If/Ii = cos645 = 1/8

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