(a) Show that if is the focal length of a thin lens in
Chapter , Problem 98(choose chapter or problem)
(a) Show that if is the focal length of a thin lens in air, its focal length in water is given by where is the index of refraction of water, is that of the lens material and is that of air. (b) Calculate the focal length in air and in water of a double concave lens that has an index of refraction of 1.50 and radii of magnitudes and
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