Question: A prescription for a corrective lens calls for + 1.50 D the lens maker grinds the lens from a blank with n = 1.56 and

A prescription for a corrective lens calls for + 1.50 D the lens maker grinds the lens from a “blank” with n = 1.56 and a preformed convex front surface of radius of curvature of 40.0cm. What should be the radius of curvature of the other surface?

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