When listening to tuning forks of frequency 256 Hz and 260 Hz, one hears the following number of beats per second:
A)0
B)2
C)4
D)8
E)258

Question

Quizplus · Accepted Answer

The number of beats per second is equal to the absolute difference between the frequencies of the tuning forks. In this case, the absolute difference is 4 Hz, which corresponds to 4 beats per second. Therefore, the answer is C.

When Listening to Tuning Forks of Frequency 256 Hz and 260