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review4 - Physics 2020 Exam 4 Review Questions Dr...

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Unformatted text preview: Physics 2020 Exam 4 Review Questions Dr. Luttermoser’s Class Note that your final exam is comprehensive. I consider half of the Final as Exam 4 which covers material since Exam 3. For the final, study items from all 4 review sheets: Exam 1 Review , Exam 2 Review , Exam 3 Review , and Exam 4 Review (this sheet). 1. What is Huygen’s Principle? 2. What is the difference between specular and diffuse reflection? What is the Law of Reflection? What is reflectivity and how is it related to the albedo of a surface? What are three things that can happen to photon as it encounters a surface? 3. How does the velocity of light change as it goes from one medium to another? What is the index of refraction? What is Snell’s Law? A spectral line has a wavelength of 2802.87 ˚ A in the vacuum of space, what is its air wavelength? 4. What is meant by dispersion and how is it related to spectral resolution? Name 2 techniques ( i.e. , devices) for dispersing light. Describe how a rainbow forms. Why are there sometimes secondary rainbows along with the primary bow?...
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