Question

define lens and mention its uses​

Answer 1

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ᴀ ʟᴇɴs ɪs ᴀ ᴛʀᴀɴsᴍɪssɪᴠᴇ ᴏᴘᴛɪᴄᴀʟ ᴅᴇᴠɪᴄᴇ ᴛʜᴀᴛ ғᴏᴄᴜsᴇs ᴏʀ ᴅɪsᴘᴇʀsᴇs ᴀ ʟɪɢʜᴛ ʙᴇᴀᴍ ʙʏ ᴍᴇᴀɴs ᴏғ ʀᴇғʀᴀᴄᴛɪᴏɴ. ʟᴇɴsᴇs ᴀʀᴇ ᴍᴀᴅᴇ ғʀᴏᴍ ᴍᴀᴛᴇʀɪᴀʟs sᴜᴄʜ ᴀs ɢʟᴀss ᴏʀ ᴘʟᴀsᴛɪᴄ, ᴀɴᴅ ᴀʀᴇ ɢʀᴏᴜɴᴅ ᴀɴᴅ ᴘᴏʟɪsʜᴇᴅ ᴏʀ ᴍᴏʟᴅᴇᴅ ᴛᴏ ᴀ ᴅᴇsɪʀᴇᴅ sʜᴀᴘᴇ. ᴀ ʟᴇɴs ᴄᴀɴ ғᴏᴄᴜs ʟɪɢʜᴛ ᴛᴏ ғᴏʀᴍ ᴀɴ ɪᴍᴀɢᴇ, ᴜɴʟɪᴋᴇ ᴀ ᴘʀɪsᴍ, ᴡʜɪᴄʜ ʀᴇғʀᴀᴄᴛs ʟɪɢʜᴛ ᴡɪᴛʜᴏᴜᴛ ғᴏᴄᴜsɪɴɢ.❤