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Question

Which wave type is used for sound ranging?


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Solution

Ultrasonic waves:

  1. Ultrasonic waves are used for sound ranging.
  2. The sound waves with frequencies higher than the waves whose frequencies are normally audible to the human ear.
  3. Their frequencies range from 105/sec to 3*109/sec.
  4. Ultrasonic wave was applied even when first alumina was applied.

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