One String on a Guitar Is Exactly in Tune

question 38

Multiple Choice

One string on a guitar is exactly in tune.The guitarist uses this string to produce a tone with a frequency of 196 Hz by pressing down at the proper fret.An adjacent string can also be used to produce this tone without being pressed against a fret.However,this adjacent string is out of tune and produces a tone that sounds lower in frequency than the other tone.When the tones are produced simultaneously,the beat frequency is 5.0 Hz.What frequency does the adjacent string produce?

• A)196 Hz
• B)191 Hz
• C)171 Hz
• D)201 Hz
• E)186 Hz

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