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The ratio to radii of curvature of a biconvex lens R1:R2 = 2 : 3. Its refractive index and focal length is 1.5 and 12 cm respectively. What is the value of R1? Consider R1 and R2 are positive and negative respectively.

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The ratio to radii of curvature of a biconvex lens R1:R2 = 2 : 3. Its refractive index and focal length is 1.5 and 12 cm respectively. What is the value of R1? Consider R1 and R2 are positive and negative respectively.



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