Question

what is meant by refractive index​

Answer 1

ΔŇŞŴ€Ř

❇️ ɪɴ ᴏᴘᴛɪᴄs, ᴛʜᴇ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx ᴏʀ ɪɴᴅᴇx ᴏғ ʀᴇғʀᴀᴄᴛɪᴏɴ 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.

h໐pē it hēlpŞ ๓คrk คŞ thē ๖rคiຖliēŞt... ❣️

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Answer 2

Answer:

The ratio of velocity of light in vacuum to

its velocity in a specified medium.....