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Can we measure the focal length of the divergent lens by placing this lens in front of the convergent lens (given all lenses are coaxial)? - Quora
Experiments to measure the focal length of a converging lens Physics Homework Help, Physics Assignments and Projects Help, Assignments Tutors online
List four precautions a student should observe while determining the focal length of a given convex lens by obtaining the image of a distant object on a screen.
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Focal Length of a Lens
Class 10| Principal Focus And Focal Length Of A Convex Lens
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To Find Focal Length of a Convex Mirror Using a Convex Mirror - Viva Voce