Choose the one alternative that best completes the statement or answers the question. -The curved surface of a 50-cm focal length plano-convex lens has a radius of curvature of 30 cm. What

Choose the one alternative that best completes the statement or answers the question.
-The curved surface of a 50-cm focal length plano-convex lens has a radius of curvature of
30 cm. What is the refractive index of the glass?

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