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Unformatted text preview: Study of Convex Lenses and Spherical Mirrors Objective: Determine the focal length of (i) a convex lens and (ii) a concave mirror. Also, study their image magnification and its relationship to the object and image distances. Equipment: A convex lens, a concave mirror, light source, a screen, holders with stands for the mirror, the lens, and the screen, and a meter stick. Figure 1: Ray Diagram for Image Formation with a Convex Lens Theory: As shown in the diagram, the convex lens (of focal length f) forms the image (I) of the object (O). if the distances of the object and its image from the center of the lens are p and q, respectively, they are related to the focal length as 1/p + 1/q = 1/f (1). Additionally, if O and I denote the object size and image size, they are related to their distances as M = [size of image/size of object] = I/O = -q/p (2). Here m stands for the image magnification and the negative sign in front of q/p signifies that the image is inverted. The same equations are applicable to the image formed with a Concave mirror. If the object distance is very large, equation (1) reduces to:...
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This note was uploaded on 05/10/2010 for the course PHYSICS 165-1001 taught by Professor Sing during the Spring '10 term at University of Maryland Baltimore.
- Spring '10