Physics 9702 · AS & A Level · Stationary waves

Stationary waves — practice question

The speed of a transverse wave on a stretched string may be altered by changing the tension in the string. A stationary wave pattern is produced on a stretched string by an oscillator operating at a frequency of $650\,\text{Hz}$. What change must be made to the wave so that the same stationary wave pattern is kept when the applied frequency is raised to $750\,\text{Hz}$?

  • ADecrease the speed of the wave on the string.
  • BDecrease the wavelength of the wave on the string.
  • CIncrease the speed of the wave on the string.
  • DIncrease the wavelength of the wave on the string.

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