Which of the following best describes an echo in the context of sound propagation and reflection?

Question

Which of the following best describes an echo in the context of sound propagation and reflection? — Exam MCQ

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B. An echo is a reflected sound heard distinctly after the original sound. — The correct choice is An echo is a reflected sound heard distinctly after the original sound.. Sound behaviour is determined by wave properties such as frequency, amplitude, wavelength and the medium of propagation.

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A. An echo is a louder sound produced when sound reflects from a wall.

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C. An echo is a change in the pitch of a sound due to distance from the source.

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D. An echo is a continuous sound produced by a vibrating object.

Which of the following best describes an echo in the context of sound propagation and reflection?

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