Three sources of sound S1,S2 and S3 of equal intensity 'I' are placed

1.	Three sources of sound S1,S2 and S3 of equal intensity 'I' are placed in a straight line with S1S2=S2S3. At a point P, far away from the sources, the wave coming from S2 is 120∘ ahead in phase of that from S1. Also, the wave coming from S3 is 120° ahead of that from S2. What would be the resultant intensity of sound at P?
Answer» Three sources of sound $S_{1}, S_{2}$ and $S_{3}$ of equal intensity 'I' are placed in a straight line with $S_{1} S_{2} = S_{2} S_{3}$ . At a point P, far away from the sources, the wave coming from $S_{2}$ is $120^{\circ}$ ahead in phase of that from $S_{1}$ . Also, the wave coming from $S_{3}$ is 120° ahead of that from $S_{2}$ . What would be the resultant intensity of sound at P?

Three sources of sound S1,S2 and S3 of equal intensity 'I' are placed in a straight line with S1S2=S2S3. At a point P, far away from the sources, the wave coming from S2 is 120∘ ahead in phase of that from S1. Also, the wave coming from S3 is 120° ahead of that from S2. What would be the resultant intensity of sound at P?

Answer»

Three sources of sound $S_{1}, S_{2}$ and $S_{3}$ of equal intensity 'I' are placed in a straight line with $S_{1} S_{2} = S_{2} S_{3}$ . At a point P, far away from the sources, the wave coming from $S_{2}$ is $120^{\circ}$ ahead in phase of that from $S_{1}$ . Also, the wave coming from $S_{3}$ is 120° ahead of that from $S_{2}$ . What would be the resultant intensity of sound at P?

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