Which of the following statements best explains why an echo is heard when sound is produced near a large, flat wall?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Because sound is absorbed by the wall and then emitted slowly
2. (B) Because sound waves pass straight through the wall and reappear on the other side
3. (C) Because sound waves reflect off the wall and return to the listener after a slight delay
4. (D) Because the wall vibrates and produces new sound identical to the original sound

Verified Answer

Option (C): Because sound waves reflect off the wall and return to the listener after a slight delay

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