... point using values of u less than the focal length. Ideal Results My Ideal results are on a separate page and were calculated using the formula 1/u+1/v=1/f u= the distance of the object from the lens v= the distance of the image from the lens f= the focal length of the lens I found this formula in my research (Internet, http:// relativity.phy.olemiss.edu) and is widely accepted as reliable way of finding the focal length of a lens. Preliminary Investigations My first preliminary investigation will be to find out which is the focal length of the lens that gives a good range of results for v. Another use for this preliminary is too see how clear the image is. For a focal length of 5 centimetres u v 10 11.5 100 5.238 The image is very small and there is not a clear image. The image is blurred. The differences are very hard to measure. There is not a wide range of results. For a focal length ...

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