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

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

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