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Sound — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
Which one has higher frequency?
✓

Answer

  1. Ultrasonic sound
Explanation:
Audible sound has a frequency range of 20Hz to 20 kHz.
Infrasonic frequency is below audible range, i.e. below 20Hz.
Ultrasonic frequency is above audible range, i.e. above 20KHz. 

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