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Q: What is the repetition of sound, produced by the reflection of sound waves?
  • A. double
  • B. echo
  • C. noise
  • D. note
Correct Answer: Option B - The repetition of sound, produced by the reflection of sound wave is called echo. Echo is the phenomenon of a sound due to its reflection from the surface of a large obstacle. When a loud sound is produced in an empty hall, the same sound is heard again after some time.
B. The repetition of sound, produced by the reflection of sound wave is called echo. Echo is the phenomenon of a sound due to its reflection from the surface of a large obstacle. When a loud sound is produced in an empty hall, the same sound is heard again after some time.

Explanations:

The repetition of sound, produced by the reflection of sound wave is called echo. Echo is the phenomenon of a sound due to its reflection from the surface of a large obstacle. When a loud sound is produced in an empty hall, the same sound is heard again after some time.