Question

What are optically rarer and denser mediums? Give an example when glass behaves as a:
i). Rarer medium
ii). Denser medium

Answer 1

Hey dear here is your answer!!!!!

Optically denser medium, the medium in which the speed of light decreases.i.e. water

Optically rarer medium, the medium in which the speed of light increase.i.e. Air

The denser and rarer medium don't depend upon the density of the medium.

Hope it helps u dear..

Answer 2

Hey
A medium through which light passes with ease without much refraction is known as opticallt rarer and the medium whoch makes these both things difficult is optically denser.

Glass is rarer when light passes from it and then comes in air.
It is dense when light passes from air into glass.

Hope it helps :)