Q.19. Explain the working and application of sonar.
Answers
1. Explain the working and application of sonar.
➜ Working of SONOR:
Sonar consists of a transmitter and a detector and is installed in a boat or a ship, as shown in Figure above ↑
The transmitter produces and transmits ultrasonic waves. These waves travel through water and after striking the object on the seabed, get reflected back and are sensed by the detector. The detector converts the ultrasonic waves into electrical signals which are appropriately interpreted. The distance of the object that reflected the sound wave can be calculated by knowing the speed of sound in water and the time interval between transmission and reception of the ultrasound.
Applications of SONOR:
The sonar technique is used to determine the depth of the sea and to locate underwater hills, valleys, submarine, icebergs, sunken ship etc.
What is a wave?
➜ A wave is a physical phenomenon characterized by its frequency, wavelength, and amplitude.
In general, waves transfer energy from one location to another, in which case they have a velocity.
Electromagnetic waves, such as light, do not require a medium and can travel through a vacuum.
Hope it is helpful to you
