Question

You hear three beats per second when two sound tones are generated. The frequency of one tone is known to be 610 Hz. The frequency of the other is
A. 604 Hz
B. 607 Hz
C. 613 Hz
D. 616 Hz
E. Either A or D
F. Either B or C

Answer 1

Answer:

F. Either B or C

Explanation:

The beat frequency is the difference of two frequencies of two waves.

Here, one wave has frequency 610 Hz and the beat frequency is 3 beats per second.

It is not mentioned which has a higher frequency. So, there are two possiblities.

$\Delta f=|610-613|=3$

or

$\Delta f=|610-607|=3$

Hence, the frequency of the other wave is 613 or 607.