Question

Compared to a sound of 10 dB a sound of 50 dB has:

a. 40 times the intensity
b. 400 times the intensity
c. 10000 times the intensity

Answer 1

Step-by-step explanation:

`\beta = 10 \: log_(10) ((i1)/(i0) ) \\`

B = intensity level

i1 = intensity

io = 10-¹² W/m²

Incidence 1

10 = 10 log10 ( I1 /10-¹²)

I1 = 10-¹¹ W/m²

Incidence 2

50 = 10 log10 ( I2 / 10-¹²)

I2 = 10-⁷ W/m²

so , I1 × 10000 = I2

Answer : C