ReflectRefractQPs

# ReflectRefractQPs - Questions/Problems 1 Geometrically...

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Questions/Problems 1 . Geometrically demonstrate using the law of reflection that you only need a mirror half your height to see your whole image (from head to toe) if the mirror is held vertically and placed at the correct elevation. Draw where your image is and its size. Why would standing at different distances from the mirror make a difference (or not)? 2 . Consider the following scenario. You are standing on the bottom of a pool looking directly up . You consider the fact that you can only see an object if light rays from that object reaches your eyes. Based on the properties of reflection and refraction, describe in words which of the following objects you could see, and where they would appear to be to you (see figure at right): a) The sun b) The person on the diving board c) The fish in the water 3. Now consider the perspective of the person on the diving board. For the fish, the underwater person, and the sun, determine if you will be able to see each object, and if so, where the object will appear to be. (see figure in problem 2) 4 . The "Invisible Man" in H. G. Wells' story was a scientist who invented a process to alter the molecules in his body to have an index of refraction to nearly unity. (a) Discuss how having an n 1 ensures "invisibility." (b) If he went swimming, would he still be invisible? Explain. 5

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ReflectRefractQPs - Questions/Problems 1 Geometrically...

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