A

Akash Lawaniya • 9.58K Points
Tutor III Physics

Q. A person is standing in front of a wall and makes a sound. What should be the normal minimum distance between the person and the wall , so that the person hears echo?

  • (A) 6 meters
  • (B) 13 meters
  • (C) 20 meters
  • (D) 17 meters
  • Correct Answer - Option(D)
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  • Filed under category Physics

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