8 An achromatic convergent doublet of two lenses in contact

Last updated: 6/1/2023

8 An achromatic convergent doublet of two lenses in contact has a power of 2D The convex lens has a power 5D What is the ratio of the dispersive powers of the convergent and divergent lenses local noriv 1 2 5 2 3 5 3 5 2 4 5 3