Question

A single sports fan is capable of yelling at an intensity level of 80 dB from a given distance. If 10,000 similar fans were all yelling from the same distance, which of the following would be closest to the observed intensity level?

A. 84 dB
B. 120 dB
C. 160 dB
D. 320 dB

Answer 1

= 120dB

Step-by-step explanation:

The Intensity level

`L = 10 Log (I_1)/(I_0)` for sigle fan

so,

`I_1 = 10^8I_0` single fan intensity

Now intensity for 10000 fan

`= 10^4 * I_1 \\= 10^4 * 10^8\\= 10^1^2I_0`

Intensity level

L =
`10log(I_1)/(I_0)`

`L = 10log (10^1^2I_0)/(I_0)`

L = 120dB

Answer 2

Answer: option "A" is correct

Explanation: the closet to understand the intensity level will be from 80db (decibels) upwards. So option a which is 84db is the answer. Thank you.