What is an optical medium ? Explain the types in it with two examples based on the amount of light they allow through them.

Explanation

Optical medium : The material through which light exhibits its different phenomena is called optical medium . There are three different kinds of optical mediums based on the passage of light .
They are
(a) Transparent medium
(b) Translucent medium
(c ) Opaque medium
(a) Transparent medium : The medium that allows light to pass through is called transparent medium .
Examples : Air , glass , pure water .
(b) Translucent medium : The medium through which light rays can pass parially is called translucent medium .
Examples : Fog , ground glass.
(c ) Opaque medium : The medium through which light rays cannot pass at all is called opaque medium .
Examples : Metal , wood .