Choose the one alternative that best completes the statement or answers the question. -A plano-convex lens is to have a focal length of magnitude 40 cm, and it is made of

Choose the one alternative that best completes the statement or answers the question.
-A plano-convex lens is to have a focal length of magnitude 40 cm, and it is made of glass of index of refraction 1.65. What radius of curvature is required?
A) 26 cm
B) 36 cm
C) 13 cm
D) 32 cm

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