Decibel is the unit for measuring intensity of sound. It is expressed in Decibels (dB). Some common sounds and their decibel ratings. Near total silence – 0 dB, A whisper -15 dB, Normal conversation – 60 dB, A lawnmower – 90 dB, A car horn -110 dB, A jet engine -120 dB. A gunshot or fire-cracker – 140 dB, If a person is being exposed to the sound of 80 dB continuously it may lead to hearing problems.
Which of the following can be said based on the above?
A) Listening to whispering sounds continuously can lead to hearing problems.
B) Hearing to continuous explosive sounds of guns can lead to hearing problems.
C) Total silence can harm the ears and some sound is required for maintaining the health of ear drums.
D) Car horns and other vehicle horn sounds do not cause any damage to the ears.
