Physics 9702 · AS & A Level · Stationary waves

Stationary waves — practice question

A musical instrument is constructed from a long tube with a mouthpiece at one end. The opposite end is open and flared, as illustrated. A musician produces stationary sound waves with a node at the mouthpiece and an antinode at the other end. The lowest frequency of sound that the instrument can produce is $92\,\text{Hz}$. Which other frequencies of sound can the instrument produce?

  • A$92\,\text{Hz},\ 138\,\text{Hz},\ 184\,\text{Hz},\ 230\,\text{Hz}$
  • B$92\,\text{Hz},\ 184\,\text{Hz},\ 276\,\text{Hz},\ 368\,\text{Hz}$
  • C$92\,\text{Hz},\ 276\,\text{Hz},\ 460\,\text{Hz},\ 644\,\text{Hz}$
  • D$92\,\text{Hz},\ 276\,\text{Hz},\ 828\,\text{Hz},\ 1288\,\text{Hz}$

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