Two glasses with refractive indices and are used to make two identical double-convex…
PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
Two glasses with refractive indices 1.5 and 1.7 are used to make two identical double-convex lenses.
(a) Find the ratio between their focal lengths.
(b) How will each of these lenses act on a ray parallel to its optical axis if the lenses are submerged in a transparent liquid with refractive index 1.6?