Two Strings Both Vibrate at Exactly 819 Hz

question 28

Multiple Choice

Two strings both vibrate at exactly 819 Hz. The tension in one of them is then increased slightly. As a result, six beats per second are heard when both strings vibrate. What is the new frequency of the
String that was tightened?

• A) 816 Hz
• B) 825 Hz
• C) 822 Hz
• D) 813 Hz

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