For a Converging Lens with Two Curved Surfaces,the Radius of Curvature

question 78

Multiple Choice

For a converging lens with two curved surfaces,the radius of curvature for both surfaces is 11 cm.If the focal length is 20 cm,what must the index of refraction be?

• A) 1.3
• B) 1.6
• C) 2.6
• D) 1.7
• E) ​1.5

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