Echo
 

Echo problem 15


A student stands a few hundred metres away from a wall and shouts. He hears a faint echo. Which statement is correct?


  • The sound waves returning are quiet because they have a reduced frequency.

  • The sound waves returning are quiet because they have a reduced wavelength.

  • The sound waves returning to the student are longitudinal.

  • The sound waves returning to the student are transverse.


 

main author and content editor: Daniel Owoyomi