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

Question

Quizplus · Accepted Answer

The new frequency is 825 Hz. The original frequency is 819 Hz, and the beat frequency is 6 Hz. This means that the new frequency is 819 Hz + 6 Hz = 825 Hz.

Two Strings Both Vibrate at Exactly 819 Hz