e403 - ANALYSIS Our third experiment entitled refraction...

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ANALYSIS Our third experiment entitled refraction from spherical surfaces deals primarily on the study of convex lens regarding its focal length. For this experiment, we try to determine the focal length of the convex lens using either graphical method or by using different locations of the object. To start, we first determined the focal length of the lens using an object at an infinite distance. For this part, we just set our object distance to be infinity resulting to an equation, where is the focal length and is the image distance. Based on our observation, the image produced by the by the convex lens is a real and inverted image. The reason behind this is that, real image are formed when the object distance is greater than the lens’ focal length. On the second part of the experiment, we now determine the focal length of a lens with a finite object distance. For this part, we used the thin lens equation given by the formula:, where f is the focal length, s is the object distance and s’ is the image distance. For this part, I noticed that even though the image distance and object distance interchange, the result regarding its focal length is will still be the same. However the image formed is different. For instance, if the object distance is
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