WAEC Physics 2012 Objective — Question 33

Question 33 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.

The main difference between echo and reverberation is that a reverberation

A. A. is reflected sound while echo is refracted sound
B. B. is the time interval between incident sound and reflected sound is shorter for reverberationCorrect
C. C. the amplitude of an echo is greater
D. D. reverberation is from acoustic speakers while echo comes from cliffs

Explanation

Reverberation occurs when the reflection of sound waves from a plane hard surface causes echo and multiple occurrence of echo, such that the time interval between incident and reflected sound is shorter for reverberation than for a distinguishable echo.

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