(a) Sound with intensity larger than 120 dB appears painful to a person. A small speaker delivers 2.0 W of audio output. How close can the person get to the speaker without hurting his ears? (b) If the sound level in a room is increased from 50 dB to 60 dB, by what factor level is the pressure amplitude increased?
Class:11
Subject: PHYSICS
Chapter: SOUND WAVES
Book:CP SINGH
Board:NEET
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