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40. Two thin lenses are arranged as shown. A small sphere 1 mm in diameter is located on the axis as shown. Calculate the diameter of the image of the sphere formed by light passing through both lenses. Answer in mm. (If the image is inverted, it will still have the same diameter.) 

(A) 8
(B) 4
(C) 2
(D) 1


40. Two thin lenses are arranged as sho..-阿摩線上測驗