"In a sound wave, a displacement node is a pressure antinode and vice versa'. Why?

Explanation

To understand why in a sound wave a displacement node is a pressure antinode and vice versa, we can break down the concepts of displacement, pressure, nodes, and antinodes step by step.

### Step-by-Step Solution:

1. **Understanding Nodes and Antinodes**:
- A **node** is a point in a standing wave where the displacement of the medium is at a minimum (zero). In sound waves, this means that the particles of the medium do not move from their equilibrium position at these points.
- An **antinode** is a point where the displacement is at a maximum. This is where the particles of the medium oscillate with the greatest amplitude.

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