NDA 2022 Physics question

SONAR is a device that is used to measure the distance of underwater objects by a ship. Which of the following types of waves does it use for this purpose?

(A)Infrasonic waves
(B)Sound waves in audible range for human beings
(C)Ultrasonic wavesCorrect
(D)All of the above

Answer: (C)

Solution

SONAR (Sound Navigation And Ranging) sends out pulses of ultrasonic waves, which are reflected by underwater objects; the distance is found from the

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Question ID VK-032286