A person stands between two speakers driven by the same source. Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What type of interference does the person sense?
c: both constructive and destructive
d: neither constructive nor destructive.
First, we use the wave equation to determine the wavelength of the sound produced by the speakers:
c = f*l
where c is the speed of sound, f is the frequency, and l is the wavelength. Re-arranging gives us:
l = c/f = (330 m/s)/(200 Hz) = 1.65 m
At the listener's location, the cycle of the wave is determined by the distance from the speaker divided ...
The type of interference is revealed for a given situation. The person which stands between two speakers driven by the same source are given.