H04- EM Radiation-solutions

H04- EM Radiation-solutions - moczulski (ksm935) H04: EM...

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moczulski (ksm935) – H04: EM Radiation – mccord – (50960) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points What is the Frequency oF light with a wave- length oF 4.0 × 10 - 7 m? 1. 3 . 0 × 10 - 14 s - 1 2. 7 . 5 × 10 14 s - 1 correct 3. 3 . 0 × 10 14 s - 1 4. 120 s - 1 5. 1 . 3 × 10 - 15 s - 1 Explanation: 002 10.0 points What is the correct order oF decreasing Fre- quency? 1. radio waves, inFrared radiation, visible light, ultraviolet radiation 2. ultraviolet radiation, visible light, in- Frared radiation, radio waves correct 3. inFrared radiation, radio waves, visible light, ultraviolet radiation 4. radio waves, visible light, ultraviolet radi- ation, inFrared radiation 5. visible light, ultraviolet radiation, in- Frared radiation, radio waves Explanation: ultraviolet radiation > visible light > inFrared radiation > radio waves 003 (part 1 of 2) 10.0 points Light with a Frequency oF 6 . 84 × 10 14 Hz lies in the violet region oF the visible spectrum. What is the wavelength oF this Frequency oF light? Correct answer: 438 . 596 nm. Explanation: ν = 6 . 84 × 10 14 Hz c = 3 × 10 8 m / s c = λ ν λ = c ν = 3 × 10 8 m / s 6 . 84 × 10 14 s - 1 = 4 . 38596 × 10 - 7 m · 10 9 nm 1 m = 438 . 596 nm 004 (part 2 of 2) 10.0 points When an electron beam strikes a block oF copper, x-rays oF Frequency 1 . 39 × 10 19 Hz are emitted. What is the wavelength oF these x-rays? Correct answer: 21
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This note was uploaded on 10/01/2011 for the course CHEM 301 taught by Professor Wandelt during the Fall '08 term at University of Texas at Austin.

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H04- EM Radiation-solutions - moczulski (ksm935) H04: EM...

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