Question

3. Which is the device used to locate submerged objects under sea?​

Answer 1

Answer:

Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels

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Answer 2

Sonar

➡️ Sᴏɴᴀʀ (ᴏʀɪɢɪɴᴀʟʟʏ ᴀɴ ᴀᴄʀᴏɴʏᴍ ғᴏʀ SOᴜɴᴅ Nᴀᴠɪɢᴀᴛɪᴏɴ Aɴᴅ Rᴀɴɢɪɴɢ) ɪs ᴀ ᴛᴇᴄʜɴɪϙᴜᴇ ᴛʜᴀᴛ ᴜsᴇs sᴏᴜɴᴅ ᴘʀᴏᴘᴀɢᴀᴛɪᴏɴ (ᴜsᴜᴀʟʟʏ ᴜɴᴅᴇʀᴡᴀᴛᴇʀ, ᴀs ɪɴ sᴜʙᴍᴀʀɪɴᴇ ɴᴀᴠɪɢᴀᴛɪᴏɴ) ᴛᴏ ɴᴀᴠɪɢᴀᴛᴇ, ᴄᴏᴍᴍᴜɴɪᴄᴀᴛᴇ ᴡɪᴛʜ ᴏʀ ᴅᴇᴛᴇᴄᴛ ᴏʙᴊᴇᴄᴛs ᴏɴ ᴏʀ ᴜɴᴅᴇʀ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴏғ ᴛʜᴇ ᴡᴀᴛᴇʀ, sᴜᴄʜ ᴀs ᴏᴛʜᴇʀ ᴠᴇssᴇʟs.

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