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AP EAMCET Engineering 2014 Code A Solved Paper

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Question : 102

Total: 160

A convex lens has its radii of curvature equal. The focal length of the lens is f. If it is divided vertically into two identical planoconvex lenses by cutting it, then the focal length of the planoconvex lens is (µ=the refractive index of the material of the lens)

f
2
2f
(µ−1)f
f

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