Plastic wall Incident sunlight Air Water
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A beam of unpolarized sunlight strikes the vertical plastic wall of a water tank at an unknown angle. Some of the light reflects from the wall and enters the water. The refractive index of the plastic wall is 1.61. If the light that has been reflected from the wall into the water is observed to be completely polarized, what angle does this beam make with the normal inside the water?
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- A beam of light goes from the air into the water with incident angle θa = 34 degrees. The index of refraction of water is nw = 1.3. The index of refraction of air is na = 1. a) Express the sine of the angle of refraction θw in terms of θa, nw, and na. b)Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other. What angle should the polarizing direction of the middle sheet make with the polarizing direction of the first sheet to obtain maximum transmitted intensity when unpolarized light is incident on the stack? 0° 15° 30° 45° 60° 75° 90°A beam of initially unpolarized light of intensity 777 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 14.6-degree angle with respect to the previous filter s axis. The beam of light emerging from the final filter in the series has an intensity of 135.9 W/m^2. How many polarizing filters did the beam pass through? 9 34 26 17
- The speed of light in a vacuum is 3.00 ´ 108 m/s. If the refractive index of a diamond is 2.42, what speed does light travel as it passes through a diamond?A beam of initially unpolarized light passes through a sequence of three ideal polarizers. The angle p12 between the axes of the first and second polarizers is 23.9°, and the angle p23 between the axes of the second and third polarizers is 58.7°. P12 P23 What is the ratio of the intensity I3 of light emerging from the third polarizer to the intensity Io of light incident on the first polarizer? I3 0.2256 Io IncorrectAn unpolarized beam of light with an intensity of 5000 W/m2 is incident on two ideal polarizing sheets. If the emerging light has an intensity 0.200 times the original intensity of the incident beam, what is the angle between the two polarizers?