Four identical coherent sound sources S1 S2 S3 and S4 are

Last updated: 6/8/2023

Four identical coherent sound sources S1 S2 S3 and S4 are placed collinearly at a separation d from each other as shown in the figure Each one can produce sound of intensity I and wavelength A When the separation d is equal to minimum possible value d no sound was detected at a point P on the line joining the sources But when the separation d is equal to minimum possible value d2 the intensity of sound at P is 31 Find the value of 4d 6d S d S d S d S P