Chapter 27 to 31 Homework Solutions

Physics... Chapter 27: Light, Chapter 28: Color,

Chapter 29: Reflection and Refraction, Chapter 30: Lenses, &

Chapter 31: Diffraction and Interference Below are the answers for selected homework assignments. Use them as a guide to make sure you are doing the

problems correctly. A word of caution: Turning in only the answers below will result in NO CREDIT. You must show your work to receive full credit for

homework assignments.

Problem Answer Problem Answer

#9a 517 m #12 1,240,000 Hz

Chapter 27 Homework

#10a 7.00 x 10-7 m 242 m

#11a 4.3 x 1014 Hz 9.73 x 107 Hz

3.08 m

Chapter 28 Homework

Problem Answer Problem Answer

#8 3.45 x 10-19 J #11 6.81 x 10-26 J

#9 2.46 x 1015 Hz #12 6.33 x 10-7 m

1.22 x 10-7 m 3.14 x 10-19 J

#10 6.42 x 10-19 J

7.10 x 10-19 J

Chapter 29 Homework

Problem Answer Problem Answer

#4 Smaller . . . #5 32.3 º

32 º 31.4 º

Chapter 30 Homework

Problem Answer Problem Answer

#1 .83 m #5 12 cm

#2 .051 m #6 -24 mm

#3 465 cm #7 -26.7cm

30 #8 -2.0 cm

#4 100 mm #9 -6.4 cm

1 #10 11 cm

Chapter 31 Homework

Problem Answer Problem Answer

#3 1.81 x 10-6 m #5 .28 m

#4 5.43 x 10-7 m .20 m

543 nm