Exposure to noise above ----- cause permanent hearing loss: (A) 85 db, (B) 90 db, (C) 100 db, (D) 160 db
Answer is C. Repeated or continuous exposure to noise around 100 decibels may result in a permanent hearing loss. In this, the inner ear damage may vary from minor changes in the hair cell endings to complete destruction of the organs of coi.Exposure to noise above 160dB may rupture the tympanic membrane and cause permanent hearing lossPark 23e pg: 742