Q. 55.0( 1 Vote )
Write true of false for the following statements:
The minimum distance between a source and the reflector of sound should be 34 m.
The total distance covered by the sound from the point of generation and reflecting surface and back should be at least (344 m/s)x0.1 s = 34.4 m. Thus, the minimum distance between point of generation and reflecting surface should be half of it i.e. 17.2 m.
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The frequencies of four sound waves are given below. Which of these sound waves can be used to measure the depth of sea by the echo method?
A. 15,000 Hz B. 10 kHz
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