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Answer:
2. Following is used for measuring intensity of sound.
- A. Sound level Meter
An audiometer should be the answer but there's no audiometer in the choices so i guess sound level is the answer cause sound-level meter, device for measuring the intensity of noise, music, and other sounds. just like audiometer.
3. The level of sound during conversation is
- C. 60 DBA
The normal conversation sound is 60 Dba while a whisper sound is about 30 Dba.
4. Allowed noise level by who in residential areas is
- B. 50 db
residential areas is about 55 dB and 45 dB during daytime and night respectively. which is 50 is the closer one.
Explanation:
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