Two tuning forks have frequencies of 440 and 522 Hz.What is the beat frequency if both are sounding simultaneously?
A)962 Hz
B)481 Hz
C)82 Hz
D)55 Hz
E)41 Hz

Question

Quizplus · Accepted Answer

The beat frequency is equal to the absolute difference between the frequencies of the two tuning forks. 
Therefore, the beat frequency is given by: 
|440 - 522| = |-82| = 82 Hz. 
Hence, the correct answer is C.

Two Tuning Forks Have Frequencies of 440 and 522 Hz