The ordinary and maximum tolerance limit of sound by human being is A. 50 db to 70 db (decibel) B. 60 db to 80 db (decibel) C. 65 db to 75 db (decibel) D. 70 db to 85 db (decibel)

The correct answer is: A. 50 db to 70 db (decibel)

The decibel (dB) is a logarithmic unit that expresses the ratio of a physical quantity (such as sound pressure) to a reference value. The reference value for sound pressure is 20 micropascals (μPa), which is the threshold of human hearing.

Sound pressure levels are typically measured in decibels (dB). The higher the dB level, the louder the sound. The following table shows some common sound pressure levels and their corresponding effects on humans:

Sound pressure level (dB) | Effect on humans
———————– | ————————
0 dB | Threshold of hearing
20 dB | Very quiet whisper
30 dB | Quiet conversation
40 dB | Normal conversation Join Our Telegram Channel