HW 04 EM Radiation-solutions - nanni (arn437) HW 04 EM...

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Unformatted text preview: nanni (arn437) HW 04 EM Radiation vanden bout (50985) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page find 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 . 10- 14 s- 1 2. 3 . 10 14 s- 1 3. 7 . 5 10 14 s- 1 correct 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. infrared radiation, radio waves, visible light, ultraviolet radiation 2. visible light, ultraviolet radiation, in- frared radiation, radio waves 3. radio waves, visible light, ultraviolet radi- ation, infrared radiation 4. ultraviolet radiation, visible light, in- frared radiation, radio waves correct 5. radio waves, infrared radiation, visible light, ultraviolet radiation Explanation: ultraviolet radiation > visible light > infrared radiation > radio waves 003 (part 1 of 2) 10.0 points Light with a frequency of 7 . 34 10 14 Hz lies in the violet region of the visible spectrum. What is the wavelength of this frequency of light? Correct answer: 408 . 719 nm. Explanation: = 7 . 34 10 14 Hz c = 3 10 8 m / s c = = c = 3 10 8 m / s 7 . 34 10 14 s- 1 = 4 . 08719 10- 7 m 10 9 nm 1 m = 408 . 719 nm 004 (part 2 of 2) 10.0 points When an electron beam strikes a block of copper, x-rays of frequency 1 . 77 10 19 Hz are emitted. What is the wavelength of these x-rays?...
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HW 04 EM Radiation-solutions - nanni (arn437) HW 04 EM...

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