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The left face of a biconvex lens has a radius of curvature of 11.5 cm, and the right face has a radius of curvature of 20.0 cm. The index of refraction of glass is1.44.
a) Calculate the focal length of the lens.b) Calculate the focal length if the radii of curvature of the two faces are interchanged.
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Suppose an astronomical telescope is being designed to have an angular magnification of 31.6. If the focal length of the objective lens being used is 98.0 cm, find the required focal length of the eyepiece and the distance between the two lenses f..
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