- 1 Two Thin Lenses Of Focal Lengths F And F Separated By A Distance D Have An Equivalent Focal Length Of 40 Cm The Co 1 (28.73 KiB) Viewed 22 times
1. Two thin lenses of focal lengths f₁ and f₂ separated by a distance d have an equivalent focal length of 40 cm. The co
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1. Two thin lenses of focal lengths f₁ and f₂ separated by a distance d have an equivalent focal length of 40 cm. The co
1. Two thin lenses of focal lengths f₁ and f₂ separated by a distance d have an equivalent focal length of 40 cm. The combination satisfies the conditions for minimum spherical aberration and is also achromatic. Find the values of f₁, f₂ and d. Assume that both the lenses are of the same material. [2+2+2]