Physics, asked by colishie, 10 months ago

The power of a lens can be obtained from the focal point of the same lens using

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Answered by Anonymous

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ᴛʜᴇ ᴘᴏᴡᴇʀ ᴏғ ᴀ ʟᴇɴs ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴛʜᴇ ʀᴇᴄɪᴘʀᴏᴄᴀʟ ᴏғ ɪᴛs ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ ɪɴ ᴍᴇᴛᴇʀs, ᴏʀ ᴅ = ①/ғ, ᴡʜᴇʀᴇ ᴅ ɪs ᴛʜᴇ ᴘᴏᴡᴇʀ ɪɴ ᴅɪᴏᴘᴛᴇʀs ᴀɴᴅ ғ ɪs ᴛʜᴇ ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ ɪɴ ᴍᴇᴛᴇʀs. ʟᴇɴs sᴜʀғᴀᴄᴇ ᴘᴏᴡᴇʀ ᴄᴀɴ ʙᴇ ғᴏᴜɴᴅ ᴡɪᴛʜ ᴛʜᴇ ɪɴᴅᴇx ᴏғ ʀᴇғʀᴀᴄᴛɪᴏɴ ᴀɴᴅ ʀᴀᴅɪᴜs ᴏғ ᴄᴜʀᴠᴀᴛᴜʀᴇ.

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