Q. Ultrasound devices operate with minimum frequency from

  • (A) 20kHz
  • (B) 35 kHz
  • (C) 45 kHz
  • (D) 60 kHz
✅ Correct Answer: (A) 20kHz

Published by Neha Sharma ⭐ 7.80K Points at 30-Jul-2022 12:52 pm in Physics

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