Question: 1) An object is 40 cm in front of a concave mirror with a focal length of 20 cm. Use ray tracing to determine the position of the image. Is the image upright or inverted?
2) An object is 32 cm in front of a convex mirror with a focal length of -20 cm. Use ray tracing to determine the position of the image. Is the image upright or inverted?
3) An object is 4 cm in front of a converging lens with a focal length of 15 cm. Determine the location of the image. Is the image upright or inverted?
4) An object is 11 cm in front of a diverging lens with a focal length of -6 cm. Determine the location of the image. Is the image upright or inverted?
5) A goldfish lives in a 50-cm-diameter spherical fish bowl. The fish sees a cat watching it. If the cat's face is 20 cm from the edge of the bowl, how far from the edge does the fish see it as being? (You can ignore the thin glass wall of the bowl.)
6) A 1.4-cm-tall candle flame is 59 cm from a lens with a focal length of 18 cm. What is the image distance? What is the height of the flame's image?
7) A dentist uses a curved mirror to view the back side of teeth in the upper jaw. Suppose she wants an upright image with a magnification of 1.5 when the mirror is 2.0 cm from a tooth. Should she use a convex or a concave mirror? What focal length should it have?
8) Ramon has contact lenses with the prescription +3.0 D. What eye condition does Ramon have? What is his near point without the lenses?
9) Yang can focus on objects 130 cm away with a relaxed eye. With full accommodation, she can focus on objects 21 cm away. After her eyesight is corrected for distance vision, what will her near point be while wearing her glasses? Express your answer to two significant figures and include the appropriate units.