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Grade 11General Physics

Two lenses of power +12D and -2D are put in contact coaxially.What is their equivalent focal length?

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Profile image of Koushik
9 Years agoGrade 11
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1 Answer

Profile image of shubham
9 Years ago
Apply 1/f1+1/f2=1/F , the formula for equivalent focal length when two lens are placed coaxially , or we can say P1+p2=P