28. •• A light ray in air is incident on a glass plate 10.0 cm thick at an angle of incidence of 40°. The glass has an index of refraction of 1.65. The emerging ray on the other side of the plate is parallel to the incident ray but is laterally displaced. What is the perpendicular distance between the original direction of the ray and the direction of the emerging ray? [Hint: See Example 22.4.]