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  • The wave pattern on a stretched string is shown in the figure. Interpret what kind of wave this is and find its wavelength.

The wave pattern on a stretched string is shown in the figure. Interpret what kind of wave this is and find its wavelength.

Answers (1)

The displacement of medium particles at a distance 10,20,30,40 and 50cm are always at rest. (property of nodes in stationary waves)

Att=\frac{T}{4} and \frac{3T}{4} all particles are at rest which happens in a stationary wave when the particle crosses its mean position.

So, the graph of wave shows a stationary wave. Nodes are at x=10, 20,30, 40 cm and distance between successive nodes is

\frac{\lambda}{2}=(30-20); \lambda =20cm

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