67. On the horizontal bottom of the pool depth h = 1,5 m is a flat mirror. The light beam enters the water at an angle i1 = 45°. Determine the distance from the place of S in the water entering the beam to the place of its exit at the surface of the water after reflection from the mirror. The refractive index of water n = 1,33.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)