Anarrow beam of light from a laser travels through air (n=1.00) and strikes point a on the surface of the water (n=1.33) in a lake. the angle of incidence is 55° . the depth of the lake is 3.0 m. on the flat lake-bottom is point b, directly below point
a. (a) if refraction did not occur, how far away from point b would the laser beam strike the lake-bottom? (b) considering refraction, how far away from point b would the laser beam strike the lake-bottom?