A porro prism is commonly used in binoculars as part of the inverting optics. The prism, as shown below, is basically a right angle prism that relies on total internal reflection on the hypotenuse side of the prism to redirect incident rays by 90 deg. If a laser is incident on the prism as shown in the figure, describe (and validate with calculations and ray tracing) the path of the laser beam if the prism were submerged in water. Assume that the prism is made of glass with n = 1.52.

A porro prism is commonly used in binoculars as part of the inverting optics. The prism, as shown below, is basically a right angle prism that relies on total internal reflection on the hypotenuse side of the prism to redirect incident rays by 90 deg. If a laser is incident on the prism as shown in the figure, describe (and validate with calculations and ray tracing) the path of the laser beam if the prism were submerged in water. Assume that the prism is made of glass with n = 1.52.