244CHAPTER 22 22.18At the first surface, the angle of incidence is 130.0θ=°, and Snell’s law gives ()11121.00 sin30.0sinsinsin19.51.50airglassnn−−°===1°Since the second surface is parallel to the first, the angle of incidence at the second surface is =19.5°and the angle of refraction is ( )2sin1.50 sin19.5sin30.01.00ssglassairn°singlan=°Thus, the light emerges traveling parallel to the incident beam. 22.19The angle of refraction at the first surface is 219.5=°(see Problem 18). Let hrepresent the distance from point ato c(that is, the hypotenuse of triangle abc). Then, 22.00 cm
This is the end of the preview.
access the rest of the document.