A displacement–time graph for a fixed air particle shows that the displacement…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A displacement–time graph for a fixed air particle shows that the displacement repeats every

4.0\,\text{ms}

. What is the frequency of the corresponding sound wave? (a)

500\,\text{Hz}

(b)

250\,\text{Hz}

(c)

333\,\text{Hz}

(d)

125\,\text{Hz}