The minimum sound pressure that the human ear can detect isans.10 Pa200 μPa20 μPa2 μPa Previous Marked for Review Next

Break Down the Problem

1. Identify the given options for the minimum sound pressure that can be detected by the human ear.
2. Understand the correct value in terms of Pascal.

Relevant Concepts

1. The threshold of hearing for the human ear is known to be around $20 \, \mu\text{Pa}$ (micropascals).

Analysis and Detail

1. Options Provided:

   • $10 \, \text{Pa}$
   • $200 \, \mu\text{Pa}$
   • $20 \, \mu\text{Pa}$
   • $2 \, \mu\text{Pa}$

2. Analysis:

   • We know that $20 \, \mu\text{Pa}$ is considered the standard threshold of hearing.
   • $10 \, \text{Pa}$ is significantly higher than typical sound levels that humans can detect.
   • $200 \, \mu\text{Pa}$ is also above the standard threshold.
   • $2 \, \mu\text{Pa}$ is below the recognized minimum.

Verify and Summarize

1. The standard minimum sound pressure that the human ear can perceive is indeed around $20 \, \mu\text{Pa}$.
2. The other values listed are either too high or too low to be the threshold of hearing.

Final Answer

The correct option for the minimum sound pressure that the human ear can detect is $20 \, \mu\text{Pa}$.