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A Double-Convex Lens Is Made of Glass of Index of Refraction

Question 23

Multiple Choice

A double-convex lens is made of glass of index of refraction 1.60. If the radii of curvature of the two surfaces are 10 cm and 20 cm, the focal length of the lens in air is A) 11.1 cm B) -11.1 cm C) 25 cm D) 33.3 cm E) -33.3 cm A double-convex lens is made of glass of index of refraction 1.60. If the radii of curvature of the two surfaces are 10 cm and 20 cm, the focal length of the lens in air is


A) 11.1 cm
B) -11.1 cm
C) 25 cm
D) 33.3 cm
E) -33.3 cm

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