Chapter 23
1. (p.717 prob.4) A person whose eyes are 1.62m above the floor stands 2.10m in front of a vertical plane mirror whose bottom edge is 43m above the floor, fig. 23-49. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the floor that can been reflected in the mirror?
2. (p.718 prob.13) A mirror at an amusement park shows an upright image of any person who stands 1.3m in front of it. If the image is three times the person's height, what is the radius of curvature?
3. (p.718 prob.28) The speed of light in a certain substance is 85 percent of its value in water. What is the index of refraction of this substance?
4. (p.719 prob.34) Light is incident on an equilateral crown glass prism at a 45.0° angle to one face, Fig. 23-51. Calculate the angle at which light emerges from the opposite face. Assume that n = 1.52
5. (p719 prob.44) A beam of light is emitted 8.0cm beneath the surface of a liquid and strikes the surface 7.0cm from the point directly above the source. If total internal reflection occurs, what can you say about the index of refraction of the liquid?
6. (p.720 prob.52) A stamp collector uses a converging lens with focal length 24cm to view a stamp 18cm in front of the lens. (a) Where is the image located? (b) What is the magnification?
7. (p.720 prob.60) (a) A 2.20-cm-high insect is 1.2m from a 135-mm-focal-length lens. Where is the image, how high is it, and what type is it? (b) What if f = -135mm?