A Violinist Is Tuning the a String on Her Violin

question 72

Multiple Choice

A violinist is tuning the A string on her violin by listening for beats when this note is played simultaneously with a tuning fork of frequency 440 Hz.She hears a beat frequency of 4 Hz.She notices that,when she increases the tension in the string slightly,the beat frequency decreases.What was the frequency of the mistuned A string?

• A)448 Hz
• B)444 Hz
• C)436 Hz
• D)432 Hz
• E)438 Hz

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