1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Constrcutive interference

  1. May 1, 2014 #1
    1. The problem statement, all variables and given/known data

    One speaker is located at the origin and the other is located at (x,y)=(0,3.00m). The speakers emit identical sound waves of wavelength 2.00m which are initially in phase. Where does constructive interference occur?

    ANS: x=1.50m

    3. The attempt at a solution

    Difference of the distance of the two speakers = λ = 2
    √(3^2 + d^2) - d = 2
    (3^2 + d^2) = (2 + d)^2
    9 + d^2 = 4 + 4d + d^2
    5 = 4d
    d = 1.25m

    What's wrong with my attempt, please?
  2. jcsd
  3. May 1, 2014 #2
    What is d ? It is difficult to follow what you have done.

    The difference of the distance to a point from the speakers for constructive interference is not necessarily λ .Yes ,it can . But it can also be 0 or any other integral multiple of λ .

    What is the locus of a point equidistant from two points ?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Constrcutive interference
  1. Interference patterns (Replies: 1)

  2. Wave interference? (Replies: 9)