Question

`\textbf{What do you mean by Refractive Index ?}`


`\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\`

`\qquad \tiny{ \sf \: no \: \: classes \: \: today {}^{} . \: it \: feels \: so \: relaxing \: \sqrt{} }`
​

Answer 1

Rarefaction is the reduction of an item's density, the opposite of compression.

Rarefaction is the reduction of an item's density, the opposite of compression.

Answer 2

The Refractive Index (RI) is defined as the ratio of the speed of light in a vacuum to its speed in the sample medium.

Formula:-

`n = \displaystyle{ (c)/(v) }`

Where,

c is the speed of light and v is the phase velocity of light.