Physics (AS & A Level) · Oct / Nov 2018 · Paper 12 · Question 23
When a guitar string is plucked, it causes a longitudinal sound wave in the air, as shown. The speed of sound in the air is 340 m s⁻¹. What is the approximate frequency of the sound wave shown?
- A430 Hz
- B680 Hz
- C1100 Hz
- D1400 Hz
As printed in the paper
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Correct answer: B. 680 Hz
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