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Sahay Sir > Question Answers > AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 16 - Waves > Two lenses of power + 12 D and -2 D are combined together. What is their equivalent focal length ?

Two lenses of power + 12 D and -2 D are combined together. What is their equivalent focal length ?

Two lenses of power + 12 D and -2 D are combined together. What is their equivalent focal length ?