The bottom of a container is made of an equi convex lens The

Last updated: 6/18/2023

The bottom of a container is made of an equi convex lens The focal length of the lens in air is 60 cm Now its lower surface is silvered The refractive index of the material of the lens is 1 5 Water is filled in the container to a depth 30 cm When an object is placed at a distance cm above the water surface on the principle axis of lens the final image of the object coincides with the object Find the value off given 4 3 object 30 cm