Question

sonar short note in science sub​

Answer 1

Answer:

SONAR is a Sound Navigation & Ranging technique which used for mainly in under water navigation in Submarines . Sound waves detect the object under & on the water during navigation for safe sailing . Its detect the echo of any sound and respond it . Sound waves travel far than light or radio waves in water.

Answer 2

1) SONAR is the short form for Sound Navigation and Ranging. It is used to determine the direction, distance and speed of an underwater object with the help of ultrasonic sound waves. SONAR has a transmitter and a receiver, which are fitted on ships or boats.

2) The transmitter produces and transmits ultrasonic sound waves. These waves travels through water, strike underwater objects and get reflected by them. The reflected waves are received by the receiver on the ship.

3) The receiver converts the ultrasonic sound into electrical signals and these signals are properly interpreted. The time difference between transmission and reception is noted. This time and the velocity of sound in water give the distance from the ship, of the object which reflects the waves.

4) SONAR is used to determine the depth of the sea. SONAR is also used to search underwater hills, valleys, submarines, icebergs, sunken ships, etc.