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Quiz4-Sol-SSI09 - Physics 2C Summer Session I Quiz#4 1 A...

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Physics 2C Summer Session I Quiz #4 1. A plane wave of randomly polarized light is incident on a stack 3 linear polarizers. The polarization axes are all rotated through an angle of °= 6 relative to the polarization of the light incident upon it. The intensity of the light as it emerges from the stack relative to the incident light, S=S o ; is given by A) 0 B) : 281 C) : 375 D) : 422 E) : 650 From the law of Malus S=S o = 1 2 ° cos 2 ( °= 6) ± 2 = : 281 ! B 2. Consider an incident light ray that is propagating in the plane of the page with an angle of incidence of 65 ° to the °rst of two mirrors as shown in the °gure for problem 2. Determine the angle of re±ection from the second mirror, ± M 2 : Problem 2 A) 55 ° B) 60 ° C) 65 ° D) 35 ± E) 25 ° The initial acute angle in the triangle is ² = 90 ° ° 65 ° = 25 ° : Hence the second acute angle is ³ = 180 ° ° 120 ° ° ² = 35 ° : This means that ± M 2 = 90 ° ° 35 ° = 55 ° ! A
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