8. Given a biconvex lens made of glass of index 1.5. The magnitude of the radius of curvature is the same for both surfaces. The lens has a focal length of 75 mm. What focal length would the lens have if it had the same surface curvatures but an index of 3.0? Express in millimeters.
8. Given a biconvex lens made of glass of index 1.5. The magnitude of the radius of curvature is the same for both surfaces. The lens has a focal length of 75 mm. What focal length would the lens have if it had the same surface curvatures but an index of 3.0? Express in millimeters.
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Transcribed Image Text:8.
Given a biconvex lens made of glass of index 1.5. The magnitude of the radius of
curvature is the same for both surfaces. The lens has a focal length of 75 mm. What focal length
would the lens have if it had the same surface curvatures but an index of 3.0? Express in
millimeters.
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