lab 6 rough

lab 6 rough - diverging lens(f 2 This data is completely...

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Intro: The purpose of this experiment was to gain hands on knowledge of how some simple lenses (concave and convex) affect the object-image relationship. The goal was also to calculate the focal length of both a converging lens and a compound lens by projecting a real image through the lens. By measuring the object distance and the image distance we were able to use the equations below to calculate the focal length and magnification: Results: Please see attached data tables and graphs that were used to calculate the focal length and magnification. Discussion: The results of this experiment for the converging lens and the combination lens were quite similar in the distribution of data. However, we conducting the experiment it was also easy to notice that the converging lens had a much longer focal length than the combination lens. The following are calculations from the graphical equations for the focal length (f 1 ) of the converging lens, the effective focal length (f eff , f total) of the combination lens and the focal length of the
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Unformatted text preview: diverging lens (f 2 ): This data is completely logical because the focal length of the converging lens is significantly larger than the effective focal length. We also were able to calculate the magnification of both lenses from the data. Following are example calculations for m 1 and m eff : Understandably, we had a large percentage of error in this experiment for the magnification of both lenses. For Part A of the experiment the percent error was 12.91% and in Part B the percent error was 11.03%. This was entirely due to human error. This was not a precise experiment because it was extremely hard to effectively focus the image and then measure the object and image distances. Our theory for calculating m 2 of the diverging lens is a multiplication property; this theory was developed due to the fact that the 2 lens are placed side by side and then an image is project through both at the same time. The equation for this theory is as follows:...
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This note was uploaded on 12/05/2011 for the course PHYS 132 taught by Professor Sharpe during the Fall '08 term at Cal Poly.

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