A narrow beam of light passes through a plate of glass with thickness 1.83 cm and a refractive index 1. The beam enters from air at an angle 22.

A narrow beam of light passes through a plate of glass with thickness 1.83 cm and a refractive index 1.56. The beam enters from air at an angle 22.9 ◦ . The goal is to calculate the deviation d of the ray as indicated in the figure. Find deviation d . Answer in units of cm