Question

Define denser and rarer medium...​

Answer 1

Answer:

Refraction Index:

An optically denser medium is one that slows down the incident wave, an optical rarer medium is one that causes the electromagnetic wave to pass through faster than in the medium it moved through before.

Answer 2

Having the component parts closely compacted together; crowded or compact is called denser

A medium in which speed of light is more is known as optically rarer medium and a medium in which speed of light is less is said to be optically denser medium knows as rarer medium