Answer:
661.54 Hz
Explanation:
The lowest frequency (n=1) for the constructive interference is known as the fundamental frequency. For constructive interference, the difference in the distances of the speakers from the observer is equivalent to the multiple of the wavelength. Thus:
For fundamental frequency, the wavelength = 0.52/1 = 0.52 m
We know that: V = f*λ
V = speed of sound = 344 m/s
f = fundamental frequency = ?
λ = wavelength = 0.52 m
f = V/λ = 344/0.52 = 661.54 Hz
