The number of nodes, including the end points, in a standing wave that is two wavelengths long is
A)1.
B)2.
C)3.
D)4.
E)none of the above

Question

Quizplus · Accepted Answer

A standing wave that is two wavelengths long will have nodes at both ends and at every half wavelength in between. Since one wavelength has two nodes (excluding the end points), two wavelengths will have four nodes plus the two end points, totaling six nodes. None of the given options matches this description.

The Number of Nodes, Including the End Points, in a Standing