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Class 8 Science MCQs – Certification Test 33

Pitch and Loudness Notes (Question 33) – App & e-Book Download

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MCQ: 33

Sound having frequencies above 20000Hz are called

  1. infrasound
  2. ultrasound
  3. mega sound
  4. micro sound
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Pitch and Loudness Cerification Guide – Class 8 Science App & eBook Notes

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