The frequency of a sound wave is

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

Problem

The frequency of a sound wave is 250 Hz250\,\text{Hz}. What is its time period expressed in milliseconds (ms)? (a) 0.4 ms0.4\,\text{ms} (b) 4 ms4\,\text{ms} (c) 0.25 ms0.25\,\text{ms} (d) 40 ms40\,\text{ms}

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