Two equi-convex lenses of focal length `30cm` and `70cm,` made of material of refractive
Channel: Doubtnut
Date: 12/07/2020

Two equi-convex lenses of focal length `30cm` and `70cm,` made of material of refractive index`=1.5,` are held in contact coaxially by a rubber band round their edges.A liquidof refractive index `1.3` is introduced in the space between the lenses filling it completely. Find the position of the image of a luminous point object placed on teh axis of the combination lens at a distance of `90cm` from it.