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1) Find the speed of light in Ethanol if the refractive index of Ethanol is 1.36. 2) Find the angle of refraction for a ray of light traveling from air into fresh water with an angle of incidence of 53.5. 3) Find the critical angle for a ray of light traveling from olive oil (n-1.47) into water (n-1.333) 4) A ray of light travels in air and hits an object with an incidence angle of 35.0 degrees. Find the refractive index of the object if the angle of refraction is 42.5 degrees. 5) Find the optical power of a lens if its focal point is located 54.0 cm from the lens. 6) Find the focal length of a camera lens if the camera film is 30 mm away from the lens when being used to photograph an object 1.50 m away.

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C. レ 3 xio8 I 3 6 2 Sin Smん- Sin S 3S F 0.6 04 37.1S n, n 9 ク )41 sime, 1.33) 65.06

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