Answers to Selected Even-Numbered Exercises and Problems

Chapter 34.

60.  (a) 53.1o

Chapter 35.

2.  9.10 m
10. (a) f = +20, r = +40, i = -20, virtual image, m = +2, upright image, sketch like Fig. 35-8 (a).
10. (e) convex (sing r<0), virtual image (since i<0), f = -20, p = +20, m = +0.5, upright image, sketch like Fig. 35-9 (c)
18.  -1.86 mm
28.  (a) The image of the first lens is at i1 = +20 cm (real image).  This serves as the (real) object for lens 2 so p2 = +10 cm, i2 = -50 cm,  m = m1 m2 = ... = -5.  (b) The drawing is similar but not identical to Fig. 35-17.  That is, this two lens system is a low-power microscope.
36.  fob = 9.62 mm, s = 240 mm, M = -125

Chapter 36.

24.  17.4 sin (wt + 13.3o)

Chapter 37.

4.  (a) 2.5 mm, (b) 2.2 x 10 -4 rad
10.  (a) 0.18o, (b) 0.46 rad, (c) 0.93
40.  523 nm
46.  491

Return