Conceptual Physics

Chapter Assumptions

When converting between electron-volts and joules, assume that

1 eV = 1.60×10–19 J

Answers to selected problems

Chapter 36 Answers

C.3 (a) There are more electrons leaving the surface.

(b) The electrons' maximum kinetic energy is still equal to E 0.

C.4 There is movement of holes in the valence band.

C.7 (a) Positive

(a) Negative

C.9 Yes

Answers vary

2.1 486 nm

3.1 4.2e14 Hz up to 7.5e14 Hz

3.3 1000000

5.1 4.74 eV

5.3 12 nm

8.1 shorter wavelength: 122 nm

longer wavelength: 658 nm

11.1 1.11eí6 m

14.1 2.4 eV

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