Q. The normal threshold of hearing is around

  • (A) 45-60 db
  • (B) 100-120 db
  • (C) 60-80 db
  • (D) 25-45 db
✅ Correct Answer: (D) 25-45 db

Published by Ram Sharma ⭐ 193.88K Points at 16-Nov-2021 05:24 pm in Physics

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