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Unformatted text preview: PHYSICS 6C Ch.24 Worksheet clas.ucsb.edu/staff/vince/ 5) To a person swimming 0.8m below the surface of the water in a pool, the diving board directly overhead appears to be a height of 5.2m above the swimmer. What is the actual height of the diving board above the surface of the water? 6) A lens produces a real image that is twice as large as the object and is located 15cm from the lens. Find the focal length of the lens and the object distance. Draw a ray diagram. 7) An arrow 2cm long is located 75cm from a lens with focal length f=30cm. a) If the arrow is vertical, what is the magnification of the image? b) If the arrow is placed horizontally, so that its tip is 74cm from the lens and its tail is 76cm from the lens, what is the magnification of the image (i.e. how long does the image of the arrow appear to be from tip to tail)? 8) Repeat problem 7 for the case of a lens with focal length f=-30cm....
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