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Solve the all parts of following question given below:
Question: A narrow beam of light from a laser travels through air (n = 1.00) and strikes the surface of the water (n = 1.33) in a lake at point A. The angle of incidence is 67 degrees. The depth of the lake is 6.8 m. On the flat lake-bottom is point B, directly below point A.
Part I: If refraction did not occur, how far away from point B would the laser beam strike the lake bottom?
Part II: Considering refraction, how far away from point B would the laser beam strike the lake-bottom?
Please show me how you do the above question.
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