Physics · Sound

The main reason an echo is NOT heard clearly in a small room is that the:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1speed of sound decreases significantly inside enclosed spaces
2sound frequency becomes too high for the human ear to detect
3time interval between the original sound and the reflected sound is less than 0.1 seconds✓
4sound intensity decreases too quickly over short distances

Correct answer

time interval between the original sound and the reflected sound is less than 0.1 seconds

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