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Waves on String: Standing Waves MCQ

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Standing WavesMediumQuestion 31328

Question

At a node in a standing wave on a string, which quantity is maximum?
  1. A
    Displacement amplitude
  2. B
    Velocity amplitude
  3. C
    Pressure variation (restoring force)
    Correct
  4. D
    All of these

Correct answer

Pressure variation (restoring force)

Explanation

At nodes, displacement = 0 and velocity = 0. The slope ∂y/∂x is maximum at nodes (where the string is steepest), meaning maximum tension variation / restoring force.

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