Physics 9702 · AS & A Level · Progressive waves

Progressive waves — practice question

A sound wave appears on the screen of a cathode-ray oscilloscope, as shown. The time-base setting is $0.50\,\text{ms}$ per division. What is the frequency of the sound wave?

  • A$500\,\text{Hz}$
  • B$670\,\text{Hz}$
  • C$1000\,\text{Hz}$
  • D$1300\,\text{Hz}$

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