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Sound — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceSound1 Mark
MCQ
Ultrasound has frequency of vibration
  • A
    Between $20$ and $20,000 \ Hz$
  • B
    Below $20 \ Hz$
  • ✓
    Above $20,000 \ Hz$
  • D
    Between $500$ and $10,000 \ Hz$
✓

Answer

Correct option: C.
Above $20,000 \ Hz$

Ultrasound has frequency of vibration above $20000 \ Hz.$

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