Physics, 13.09.2021 08:40, animelover730

the focal length of a convex lens of glass (n=1.5) in air is 20cm. what will be the focal lenght of this lens on immersing it in water (n=4/3)

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the focal length of a convex lens of glass (n=1.5) in air is 20cm. what will be the focal lenght of...