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Doctors Medicines MCQs Q&A

  1. More than 20000Hz
  2. Less than 20 Hz
  3. More than 20 Hz but lesser than 20000Hz
  4. None of the above
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Option 2 : Less than 20 Hz

Infrasonic waves are longitudinal mechanical waves which has frequency of less than 20Hz. These waves are produced by earthquakes, ocean waves, etc.

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Related Questions

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