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Running head: LAB 7 "THIN LENS AND IMAGE FORMATION" Rodriguez-Luna 1 “Thin Lens and Image Formation” Manuel A. Rodriguez-Luna [email protected] PHYS 224, Section 31 Nawraj Sapkota July 31, 2018, at 9:40 am Due date: 08/07/2018 Date summited:08/07/2018
LAB 7 " THIN LENS AND IMAGE FORMATION" Rodriguez-Luna 2 “Thin Lens and Image Formation” Introduction In this lab, we will use two types of thin lenses: a biconvex lens or a converging lens, and a convex-concave lens or a diverging lens. A lens is characterized by its focal length, f , which will be studied in this lab, as well as its focal points F, F′). For a converging lens, the focal length, f , is positive, and for a diverging lens, the focal length is negative. The magnitude of (f) is the distance between the focal point and the center of the lens. If an object is placed near the principal axis, the produced image through diffraction is described by equation 1, 1 f = 1 p + 1 q . In this equation, p represents the distance between the object and the center of the lens, and q represents the image distance or the distance between the image and the center of the lens; q is positive for a real image while negative for a virtual image. Equation 2, M=-q/p describes the magnification of the imageM=-q/p. The image height is positive for an upright image and negative for an inverted image.If two thin lenses are placed together, in parallel, this compound focal length can be described by equation 3, 1 f = 1 f 1 + 1 f 2 . Objective The objective of this lab is to measure the focal length of the thin lens, use the thin lens to form image and to study the thin-lens equation, and observe the chromatic aberration of the thin lens.

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