L13_Optics

# L13_Optics - Physics 251 Laboratory Spherical Lenses...

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P251 Spherical Lenses Lab 1 Physics 251 Laboratory Spherical Lenses Introduction In class recently, we have been studying optical systems and geometric optics. In this lab you will calculate the focal length of a lens system and practice using primary ray diagrams. The lens equation 111 ' s sf += where s is the object distance, s’ the image distance and f is the focal length of the lens is used to determine focal lengths for unknown thin lens systems. Remember from lecture that 1 powe r f = . Equipment and Supplies Computer with Microsoft Excel Converging lens with stand Optics track Image plate Light source with object Ruler Section 1 1. Set up the optics track with the light source on one end followed by the lens system (fixed at the center) and the image plate as shown in the picture to the right. 2. Measure and record image distance for at least 10 different object distances (from the lens). Move the image screen until the image is in sharp focus and record the distance of the screen from the lens.

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## This note was uploaded on 11/12/2009 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas.

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L13_Optics - Physics 251 Laboratory Spherical Lenses...

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