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What is the focal length of double convex lens for which the radius of curvature of each surface is 60 cm ( n = 1.5)
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![Find the focal length of a double-convex lens with `R_(1) = 15cm` and `R_(2) = -25CM`. The - YouTube Find the focal length of a double-convex lens with `R_(1) = 15cm` and `R_(2) = -25CM`. The - YouTube](https://i.ytimg.com/vi/h_7YJQN-xcg/maxresdefault.jpg?sqp=-oaymwEmCIAKENAF8quKqQMa8AEB-AH-CYAC0AWKAgwIABABGGUgZShlMA8=&rs=AOn4CLBl2Olv5iFhI05ksUNlEbc1jb6rEA)
Find the focal length of a double-convex lens with `R_(1) = 15cm` and `R_(2) = -25CM`. The - YouTube
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![A double convex lens has focal length 25 cm. The radius of curvature of one of the surfaces is d... - YouTube A double convex lens has focal length 25 cm. The radius of curvature of one of the surfaces is d... - YouTube](https://i.ytimg.com/vi/LKbnPDHi5l4/maxresdefault.jpg)
A double convex lens has focal length 25 cm. The radius of curvature of one of the surfaces is d... - YouTube
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