Question

You are walking around a large open field. The only objects nearby are two identical speakers set some distance apart, which are both producing sound in unison, with a wavelength of 4 m. As you wander around the field, you notice that at certain locations the sound you hear is surprisingly loud, whereas at others it seems unusually quiet. You conclude that you are observing the effects of interference between the two sources of sound waves. For each of the locations given, indicate what sort of interference would occur at that point. Constructive interference Destructive interference In between 8 m from each speaker 11 m from one speaker and 7 m from the other 11 m from one speaker and 14 m from the other 10 m from one speaker and 8 m from the other 20 m from one speaker and 12 m from the other 21 m from one speaker and 15 m from the other 13 m from one speaker and 18 m from the other Answer Bank

Answer 1

Here, >= 4 m Constructive interference d-d =ny condition, (d and d are the distances from the first and second speakers n = 0, 1, 2, 3 ... condition, Destructive interference d-d'=(n+/2 x Thus: ① When d=8m and dism, ④ When d=20 m, d = 12 m, | - - - - ...…. . ( When d=11m, d'a7m, did 1974 1 [constuche] (1) When d=10m, d'=8m: dud 10-8 -2 [Destructive] When d = 21 m, d'=15m: 2515 = (1+4) Destructie i When d = 11 m, d'=14 m. 4 4 d-dl - 111-142 - il when d = 13 m, ď=18m: on 11.11 - 113-18) = 3/4 [In betwany]