PHYSICS 7C Midterm: physics7C-fa2011-mt1-Aganagic-exam
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Each problem is worth 10 points, for a total of 40 points. By the time these waves reach the surface of earth (a distance de away from the sun), they are essentially plane waves. Denote the radius of the earth by re. (a) taking z to be towards the center of the earth, z = 0 at the surface of the earth, and. Em radiation hitting the earth"s surface? (hint: s = 1. 0 ) (c) write e0 in terms of ps, de, and re. If the lens has: recall from class that looking directly down at a sh in water, you see its image at a lesser depth. Now consider that you are located in a uid with index of refraction n1, the sh is located in a. The line of sight connecting you to the sh is perpendicular to the interface of the two uids (thus it is appropriate to use the small angle approximation for light rays).
