Look at the diagram.

Question

An illustration of a standing wave with two areas of maximum displacement. The area of maximum displacement is labeled A. The area with no displacement is labeled B. The length of the first area of maximum displacement is labeled C and the whole length is labeled as D.

Which point identifies a node?

A
B
C
D

Answer 1

In a standing wave, a node is a point of no displacement, while an antinode is a point of maximum displacement.

Based on your description:

• Area A is the area of maximum displacement (antinode).
• Area B is the area with no displacement (node).
• Length C describes the area of maximum displacement (antinode).
• Length D describes the whole length of the standing wave.

Therefore, the point that identifies a node is B.