Question

23. The reference intensity of sound at a point is
10-12 W/m2, then intensity of sound of 80 dB is
30.
(1) 10-8 W/m2
(2) 10+4 W/m2
(3) 10-4 W/m2
(4) 10+8 W/m​

Answer 1

Answer:

Table 1. Sound Intensity Levels and Intensities

Sound intensity level β (dB) Intensity I(W/m2) Example/effect

40 1 × 10–8 Average home

50 1 × 10–7 Average office, soft music

60 1 × 10–6 Normal conversation

u r answer is 1st