Q. The frequency of ultrasound wave is typically

  • (A) Below 02 kHz
  • (B) Above 20 kHz
  • (C) Above 20,000 kHz
  • (D) Below 20 kHz
✅ Correct Answer: (D) Below 20 kHz

Published by Ram Sharma ⭐ 193.88K Points at 16-Feb-2022 07:23 pm in Physics

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