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In the shown fig. S1 and S2 are two iden...

In the shown fig. S1 and S2 are two identical coher- ent sources of sound, separated by a distance d. A receiver moves along the line XY (which is parallel to line S1 S2) to detect the intensity of sound at various points on the line. Distance of line XY from line S1 S2 is`D (gt gt d)`. Point O is the foot of perpendicular bisector of the line S1 S2 on XY. Distance of first intensity maxima (on line XY) measured from O is y. Find percentage change in value of y if the temperature of air increases by 1%.

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S_1 and S_2 are two coherent sources of radiations separated by distance 100.25 lambda , where lambda is the wave length of radiation. S_1 leads S_2 in phase by pi//2 .A and B are two points on the line joining S_1 and S_2 as shown in figure.The ratio of amplitudes of component waves from source S_1 and S_2 at A and B are in ratio 1:2. The ratio of intensity at A to that of B (I_A/I_B) is