A certain camera uses a double-convex lens made of glass with an index of refraction of
1.60. This lens has a radius of curvature of magnitude 12 cm for the first surface and one of
magnitude 24 cm for the second surface. What is the focal length of this lens?

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The Answer of A certain camera uses a double-convex lens made of glass with an index of refraction of
1.60. This lens has a radius of curvature of magnitude 12 cm for the first surface and one of
magnitude 24 cm for the second surface. What is the focal length of this lens?

A Certain Camera Uses a Double-Convex Lens Made of Glass