Pakistan study notes for Matric, Intermediate, B.A, B.COM BSC, M.A, BCS. Free Pakistani Urdu educational school, colleges and University notes.



When two identical progressive waves with sane amplitude and frequency travel through a medium with equal velocity in opposite direction, they super impose over each other and produce a new type of wave which is known as Stationary Wave or Standing Wave.

  • In stationary waves there is no flow of energy along the waves.
  • When stationary waves are set up in a medium, the medium vibrates in several segments called Loops.
  • The point of destructive interference is called NODE, at nodes displacement is zero.
  • The point of constructive interference is called ANTINODES, at Antinodes displacement is maximum.

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