What is the intensity of sound in normal conversation?
Correct answer: D. 40-60 dB
- A. 10-20 dB
- B. 120-150 dB
- C. 90-12 dB
- D. 40-60 dB
Explanation
Normal conversation is usually about 40 to 60 dB at ordinary speaking distance. The lower range fits a whisper, while values above 90 dB are associated with loud machinery or intense music.
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