Question

Problems related to refractive index.​

Answer 1

ɴᴜᴍᴇʀɪᴄᴀʟ ᴘʀᴏʙʟᴇᴍs ᴏᴘᴛɪᴄs ( ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx)

• ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx ᴏғ ɢʟᴀss ɪs 1.5. ɪғ ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ ɪɴ ᴠᴀᴄᴜᴜᴍ ɪs 3 x 108

• ᴍ/s, ғɪɴᴅ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ɪɴ ᴍᴇᴅɪᴜᴍ.

• sᴏʟᴜᴛɪᴏɴ: ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx, µ = ᴄ / ᴠ.
• = ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ɪɴ ᴠᴀᴄᴜᴜᴍ / ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʟɪɢʜᴛ ɪɴ ᴍᴇᴅɪᴜᴍ.
• ᴠ = ᴄ / µ
• = 3 x 108 / 1.5.
• = 2 x 10 ᴍ/s. (ᴀɴs.)

• sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ ɪɴ ɢʟᴀss ɪs 2 x 108 ᴍ/s.

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