Question

ᴇxᴘʟᴀɪɴ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx



ᴋʀɪs ɪs ᴍʏ ʀᴏsᴇ ᴜɴɴɪᴇ's ғʀɪᴇɴᴅ :-) ᴍɪᴋᴇ !!​

Answer 1

$\huge \purple { \mid{ \underline{ \overline{ \ Answer :-}} \mid}}$

In optics, the refractive index of a material is a dimensionless number that describes how fast light travels through the material. It is defined as n={\frac {c}{v}}, where c is the speed of light in vacuum and v is the phase velocity of light in the medium.

Answer 2

Answer:

helo

are you prtek frind?

there a bad news for yu :(