Hearing is expressed in decibels,or units of loudness.What is the softest sound a normal ear can hear,in decibels?
A) 0
B) 10
C) 40 to 50
D) 100

Question

Quizplus · Accepted Answer

By definition,0 decibels is the softest sound the normal ear can hear.Ten decibels is the sound of a heartbeat or the rustling of leaves.The range of normal conversation is 40 to 50 decibels.The noise of a train is approximately 100 decibels.

Hearing Is Expressed in Decibels,or Units of Loudness