Two glasses with refractive indices of `1.5 & 1.7` are used to make tow identical double-convex lens
Channel: Doubtnut
Date: 26/01/2020

Two glasses with refractive indices of `1.5 & 1.7` are used to make tow identical double-convex lenses. (i) Find the ratio of their lenghts. (ii) How will each of these lenses act on a ray parallel to its optical axis if the lenses are submerged into a transparent liquid with a refractive index of `1.6` ?