Question

what is the intensity of an echo less than that of original sound?​

Answer 1

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The Echo is weaker than the original sound. This is because Echo is the refection of a sound wave i.e a reflected sound. When sound is reflected the intensity of sound decreases. Hence the Echo is weaker than the original sound.

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Answer 2

Answer:

The Echo is weaker than the original sound. This is because Echo is the reflection of a sound wave i.e a reflected sound. When sound is reflected the intensity of the sound decreases. Hence the Echo is weaker than the original sound.

Explanation: