Question:
2 Two similar thin equi convex lenses of focal length feach
Last updated: 6/27/2023
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2 Two similar thin equi convex lenses of focal length feach are kept coaxially in contact with each other such that the focal length of the combination is F When the space between the two lenses is filled with glycerin which has the same refractive index u 1 5 as that of glass then the equivalent focal length is F The ratio F F will be 1 2 1 2 1 2 3 2 3 4 3 4 Two parallel infinite line chora with lingor