Question

Viial 15 retractive index?
3.
How is the refractive index of a medium related to the speed of light in it?​

Answer 1

Answer:

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.

The refractive index of a medium (n) is equal to the speed of light (c) divided by the velocity of light through the medium (v). ... The lower the refractive index, the faster the velocity of light.

Answer 2

Answer:

➞ᴛʜᴇ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx ᴏғ ᴀ ᴍᴇᴅɪᴜᴍ (ɴ) ɪs ᴇǫᴜᴀʟ ᴛᴏ ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ (ᴄ) ᴅɪᴠɪᴅᴇᴅ ʙʏ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴍᴇᴅɪᴜᴍ (ᴠ).

➞ᴛʜᴇ ʟᴏᴡᴇʀ ᴛʜᴇ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx, ᴛʜᴇ ғᴀsᴛᴇʀ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ.