Question

Highest loudness of sound causing no harm to the ear is

• A. 20 dB
• B. 25 dB
• C. 75 dB
• D. 10 dB

Answer 1

Answer: (C)

75 dB

Sound is measured in decibels (dB). A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage our hearing. Loud noise above 120 dB can cause immediate harm to our ears.