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  • Sound - 1 (Class IX)
  • What is the time interval between the original sound and ...
Multiple choice

What is the time interval between the original sound and reflected sound when echo is heard?

  1. Less than 1/10 s

  2. Less than 1/20 s

  3. More than 1/10 s

  4. More than 1/20 s

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is the correct answer. 

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  • Acoustics and Sound Waves (2006 questions)
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