Why is an echo weaker than the original sound? 1. The echo has a shorter wavelength than the original sound due to the reﬂection

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Why is an echo weaker than the original sound? 1. The echo has a shorter wavelength than the original sound due to the reﬂection

. 2. The echo has a smaller amplitude than the original sound because sound spreads and its intensity decreases with distance. 3. The echo has a longer wavelength than the original sound due to the reﬂection. 4. The echo has a higher frequency than the original sound due to the reﬂection.

Physics

1 answer:

jasenka [17] · Answer 1 · 2022-02-01T07:30:02+03:00

The echo is weaker than the original sound since the echo has a smaller amplitude than the original sound because sound spreads and its intensity decreases with distance. For example, when the sound from a speaker is heard and is compared to its echo, the echo heard has a lower amplitude than the actual sound.