Ques. What is the intensity of sound in normal conversation?
A. 10-20 dB
B. 30-60 dB
C. 70-90 dB
D. 120-150 dB
Answer:B
Ques. What is the intensity of sound in normal conversation?
A. 10-20 dB B. 30-60 dB C. 70-90 dB D. 120-150 dB