Two speakers face each other, and they each emit a sound of wavelength (lambda). one speaker is 180 (degrees)
%u2218out of phase with respect to the other. if we separate the speakers by a distance1.5 (lambda)
,how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? ignore reflections from nearby surfaces. select all that apply.

a. 3/4 lambda
b. 0 lambda
c. 1/2 lambda
d. 1/4 lambda
e. 1 lambda