Answer:
The phase difference is
Explanation:
From the question we are told that
The distance between the loudspeakers is
The distance of the listener from the wall
The frequency of the loudspeakers is
The velocity of sound is
The path difference of the sound wave that is getting to the listener is mathematically represented as
Substituting values
The phase difference is mathematically represented as
=
Where is the wavelength which is mathematically represented as
substituting value
Substituting value into the equation for phase difference
=