Giancoli Ch. 23 – p. 659, Problems #7-16 key

7) 36.0 cm

8) 11.5 cm

9) image is 2.09 cm behind the surface, virtual and upright

10) 4.2 m

11) concave; radius is 5.7 cm

12) convex; radius is 20 m

13c) 1.0 mm

14) -6.0 m

15a) placed at center of curvature

15b) real image

15c) inverted image

15d) -1

16) convex; radius is -36.0 cm