The wave pattern on a stretched string is shown in the figure. Interpret what kind of wave this is and find its wavelength.
The displacement of medium particles at a distance 10,20,30,40 and 50cm are always at rest. (property of nodes in stationary waves)
At 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