Two small identical speakers are connected (in phase)to the same source.The speakers are 3 m apart and at ear level.An observer stands at X, 4 m in front of one speaker as shown.If the amplitudes are not changed, the sound he hears will be least intense if the wavelength is:
A)1 m
B)2 m
C)3 m
D)4 m
E)5 m

Question

Two small identical speakers are connected (in phase)to the same source.The speakers are 3 m apart and at ear level.An observer stands at X, 4 m in front of one speaker as shown.If the amplitudes are not changed, the sound he hears will be least intense if the wavelength is: 
A)1 m 
B)2 m 
C)3 m 
D)4 m 
E)5 m

Quizplus · Accepted Answer

The Answer of Two small identical speakers are connected (in phase)to the same source.The speakers are 3 m apart and at ear level.An observer stands at X, 4 m in front of one speaker as shown.If the amplitudes are not changed, the sound he hears will be least intense if the wavelength is: 
A)1 m 
B)2 m 
C)3 m 
D)4 m 
E)5 m

Two Small Identical Speakers Are Connected (In Phase)to the Same