Why is sound wave of intensity `10^-12(W)/(m^2)` and frequency 1000 Hz taken as the standard for expressing the intensity level of all other sound waves?

Explanation

To understand why a sound wave of intensity \(10^{-12} \, \text{W/m}^2\) and frequency 1000 Hz is taken as the standard for expressing the intensity level of all other sound waves, we can break down the explanation into the following steps:

### Step 1: Understanding Human Ear Sensitivity
The human ear has varying sensitivity to different frequencies of sound. It is most sensitive to certain frequencies, and this sensitivity is crucial in defining sound intensity levels.

**Hint:** Consider how the human ear perceives different frequencies and which frequency it is most responsive to.

### Step 2: Identifying the Standard Frequency
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