Question

Problem 2 Two identical sound sources are placed on the x-axis, one at x=0, and other at x=40 m. They send identical, in-phase sound wave of 3 m wave length out towards each other. Find the positions between, x=15 m and x=21 m where sound should be loudest.

Answer 1

Solution de 3 metre 40-2 .P -40 any of the side x At point point A which is 2- 20 metre the path difference is zero. If you move you would get a maxima After a minima. Next maxima will be on that location where o (path difference is d) Hence, let the pussition be P then x - 40 +2 = 3 2x : 43 43/2 = 21.5 m. So distance of P From o metre metre maxima will obtained 40-21.5 ; 18.5 at 118.5 be

For Next maxima X - 40 + X = 2 x 3 2x - 46 : 23 position and will be 40 - 23: 17 metre so NOW similarly at 15.5 metre also maxima will be obtained. positions are. so 15.5, 17, 18.5 metres from origin.