Question

what is refractive index​

Answer 1

ᴀɴsᴡᴇʀ:-

ɪɴ ᴏᴘᴛɪᴄs, ᴛʜᴇ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx ᴏғ ᴀ ᴍᴀᴛᴇʀɪᴀʟ ɪs ᴀ ᴅɪᴍᴇɴsɪᴏɴʟᴇss ɴᴜᴍʙᴇʀ ᴛʜᴀᴛ ᴅᴇsᴄʀɪʙᴇs ʜᴏᴡ ғᴀsᴛ ʟɪɢʜᴛ ᴛʀᴀᴠᴇʟs ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴍᴀᴛᴇʀɪᴀʟ. ɪᴛ ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴡʜᴇʀᴇ ᴄ ɪs ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ ɪɴ ᴠᴀᴄᴜᴜᴍ ᴀɴᴅ ᴠ ɪs ᴛʜᴇ ᴘʜᴀsᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ɪɴ ᴛʜᴇ ᴍᴇᴅɪᴜᴍ.

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs..

ᴍᴀʀᴋ ᴍᴇ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ ❤❤

Answer 2

Answer:

Refractive index, also called index of refraction, measure of the bending of a ray of light when passing from one medium into another.Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.