hw3 - padilla (tp5647) HW03: Atomic Theory Part I shear...

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Unformatted text preview: padilla (tp5647) HW03: Atomic Theory Part I shear (52375) 1 This print-out should have 27 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. Note the due date is Tuesday so you will get an answer key to study for the exam. A second homework will be posted tonight. 001 10.0 points Which color in the rainbow has the longest wavelength? 1. blue 2. yellow 3. orange 4. green 5. red 002 10.0 points What is the correct order of decreasing en- ergy? 1. visible light, microwaves, x-rays, -rays, ltraviolet light 2. microwaves, visible light, x-rays, -rays, ltraviolet light 3. visible light, ultraviolet light, microwaves, x-rays, -rays 4. -rays, x-rays, ultraviolet light, visible light, microwaves 5. microwaves, visible light, ultraviolet light, x-rays, -rays 003 (part 1 of 2) 10.0 points When sodium is heated, a yellow spectral line whose energy is 3 . 37 10- 19 J/photon is produced. What is the frequency of this light? 1. 6 . 626 10- 34 Hz 2. 1 . 602 10- 19 Hz 3. 5 . 9 10- 7 Hz 4. 3 . 37 10 11 Hz 5. 5 . 09 10 14 Hz 6. 3 . 10 8 Hz 7. 3 . 37 10 19 Hz 8. 5 . 09 10- 34 Hz 9. none of above 004 (part 2 of 2) 10.0 points What is its wavelength? 1. 5 . 9 10- 7 m 2. 1 . 602 10- 19 m 3. 3 . 10 8 m 4. 6 . 626 10- 34 m 5. 5 . 09 10 14 m 6. none of above 005 10.0 points What key result from the photoelectric effect showed that classical physics did not work on the atomic scale? 1. Light intensity and electron current were related. 2. All metals are reflective. 3. Different metals showed different behav- iors. 4. Radiation below a certain frequency, no matter how intense, would not cause electron emission. 5. The effect is not observed when a gas is introduced into the vacuum chamber. padilla (tp5647) HW03: Atomic Theory Part I shear (52375) 2 006 10.0 points Which of the following statements best sum- marizes the Planck theory of light?...
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hw3 - padilla (tp5647) HW03: Atomic Theory Part I shear...

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