Two Strings Both Vibrate at Exactly 819 Hz

question 16

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

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