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Focal length of Concave and Convex lens
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- Words:
- 786
- Submitted:
- Fri Nov 06 2009
- Mark submitted by Author:
... Focal length of Concave and Convex lens Objective In this experiment, we are going to use three different methods and one method to find the focal length of an unknown-focal length of convex lens and concave lens. Apparatus 2 meter rules, a light box, a white-coloured screen, a D.C. power supply, 2 lens holders, a plane mirror, a transparent object F, two-unknown focal length of convex and concave lens. Theory Since the convex and concave lenses are made of glasses, the focal lengths are actually the convergent point of all refracted light sources. So, the main theory that we are applying is the refraction theory and also the Lensmaker's equation. is an equation which shows the relationship between the focal length with the object and image distances. With mathematical simplification, the Lensmaker's equation can be applied as follow . Procedure Type A is a convex lens with shorter diameter B is a convex lens with longer
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