Write some application of optical fibres.

The principle used in the transmission of signals through an optical fibre is

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Fiber optic communication is gaining popularity among the various transmission media-justify.