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A nail is placed in a tank of water as shown in the top-view diagram below. (Only a portion of the tank is shown.) Assume that light passes directly from water to air. Nail Water Air a. Use a protractor and straightedge to draw each of the four refracted rays on the diagram accurately. The index of refraction for water is 1.33. Record the angles of incidence and refraction on the figure. b. If several different observers were standing in front of the tank, would they agree upon the location of the image of the nail (as viewed through the water)? Explain how you can tell from your ray diagram. c. If different observers would agree upon the image location, indicate this image location on the diagram. If different observers would not agree upon the image location, indicate on the diagram the approximate image location for each of three different observer locations. Clearly indicate which image location corresponds to which observer location. d. Is the image (or are the images) of the nail real or virtual? Explain your reasoning