ECE Board Exam March 1996 A car horn outdoors produces a sound intensity level of 90 dB at 10 ft away. At this
distance, what is the sound power in watt?
A. 12 W
B. 0.12 W
C. 0.012 W
D. 1.2 W
distance, what is the sound power in watt?
A. 12 W
B. 0.12 W
C. 0.012 W
D. 1.2 W