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प्रश्न
State the principle on which SONAR is based.
उत्तर
Sonar is an instrument that makes use of ultrasonic waves for sound ranging. It is equipped to measure even short time intervals quite accurately.
Sonar works on the principle of echoes. A strong and short (ultrasonic) sound signal is sent towards the bottom of the ocean. It then detects the echo of this signal. By noting the time after which the reflected sound (echo) reaches back, we can calculate the depth of the ocean using the formula.
Depth of ocean = `(v t)/2`, where v is the velocity of the ultrasonic wave.
संबंधित प्रश्न
Name the waves used for echo depth sounding.
What is meant by sound ranging?
Give one use of sound ranging.
What is 'SONAR'?
State the use of echo in medical science/field.
Calculate the distance covered by the Ultrasonic wave having a velocity of 1.5 kms-1 in 14 s, when it is received after reflection by the receiver of the SONAR.
Name the waves used in SONAR.
Give one reason for the use of ultrasonic waves in echo depth sounding.
