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Sound — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceSound1 Mark
MCQ
An ultrasound equipment works at frequency:
  • ✓
    Higher than $20,000 \ Hz$
  • B
    Higher than $10,000 \ Hz$
  • C
    Lower than $20,000 \ Hz$
  • D
    Lower than $10,000 \ Hz$
✓

Answer

Correct option: A.
Higher than $20,000 \ Hz$

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