# Answers_chapter 14-Light_Absorption- - Optical Spectroscopy...

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Reading: Required: Allen Chapter 14, pp 291-307 Recommended: Tinoco (5 th Ed) pp 489-502, 507-516, 520-524 Assigned Problems: - Chapter 14: 1, 2, 3, 5, 6, 7, 8, 16 (correction: ns -1 should be ns), 17 - Problems discussed in class - Posted problems. Optical Spectroscopy

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What is the frequency of light with a wavelength of a) 1 nm, b) 500 nm, and c) 3 cm? Electromagnetic Spectrum (1) 1. a) 3 × 10 17 m b) 6 × 10 14 m c) 1 × 10 10 m 2. a) 3 × 10 -1 s -1 b) 6 × 10 1 s -1 c) 1 × 10 6 s -1 3. a) 3 × 10 17 s -1 b) 6 × 10 14 s -1 c) 1 × 10 10 s -1 4. a) 300 × 10 17 s -1 b) 600 × 10 14 s -1 c) 100 × 10 10 s -1
What is the frequency of light with a wavelength of a) 1 nm, b) 500 nm, and c) 3 cm? Answer: 3. a) 3 × 10 17 s -1 b) 6 × 10 14 s -1 c) 1 × 10 10 s -1 ν = ࠵? ࠵? ν = 3 × 10 8 m s -1 /1 × 10 -9 m Electromagnetic Spectrum (1)

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Give the spectral classification of the radiation at each frequency. a) 3 × 10 17 s -1 b) 6 × 10 14 s -1 c) 1 × 10 10 s -1 a) X-ray b) Visible c) microwave Answer: Electromagnetic Spectrum (2)
What is the frequency of orange light (620 nm)? c = 3.00 × 10 8 m/s Electromagnetic Spectrum (3) 1. 4.84 × 10 14 s -1 2. 2.06 × 10 -15 s -1 3. 2.06 × 10 -15 s 4. 4.84 × 10 5 cm 5. 4.84 × 10 14 cm -1

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What is the frequency of orange light (620 nm)? c = 3.00 × 10 8 m/s Electromagnetic Spectrum (3) 1. 4.84 × 10 14 s -1 Answer: ν = ࠵? ࠵?
What is the energy of one photon of orange light (620 nm)? c = 3.00 × 10 8 m/s h = 6.626 × 10 -34 Js Electromagnetic Spectrum (4) 1. 7.30 × 10 47 J 2. 2.21 × 10 -42 J 3. 3.21 × 10 -19 J 4. 1.61 × 10 6 J 5. 3.21 × 10 -19 cm -1

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What is the energy of one photon of orange light (620 nm)? c = 3.00 × 10 8 m/s h = 6.626 × 10 -34 Js Electromagnetic Spectrum (4) 3. 3.21 × 10 -19 J Answer: E = ࠵?࠵? E = 6.626 × 10 -34 Js × 4.84 × 10 14 s -1 =
Which of the following statements is not true? Optical Transitions (1) 1. The transition dipole moment connects the ground and excited state wave functions.

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• Spring '14
• Atom, Photon, Stimulated emission, dipole moment, beer-lambert law

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