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Two similar thin equi convex lenses of focal length f each are kept coaxiallyin contact with each other such that the focal length of the combination is F1 when the space between the two lenses is filled with glycerine (which has the same refractive index (μ=1.5) as that of glass ) then the equivalent focal length is F2 the rati |
| Answer» Two similar thin equi convex lenses of focal length f each are kept coaxiallyin contact with each other such that the focal length of the combination is F1 when the space between the two lenses is filled with glycerine (which has the same refractive index (μ=1.5) as that of glass ) then the equivalent focal length is F2 the rati | |