First we apply Snell’s law and solve for the angle of incident Θ. Incident angle i = Θ and refractive angle r = 45°. Refractive index n _{1} in water is 1.33 and refractive index n_{2} in air is one.Incident angle is 32.1°. From the geometry of the diagram, we see that d = 2.71 m Pool true depth is 2.71 meters. |