Question

What is Phase Change with Position?

Answer

Phase Change with Position - At any instant t, if ɸ1 and ɸ2 are the phase of two particle whose distances from origin are x1 and x2, respectively. Then, ɸ1 = (ωt - kx1) and ɸ2 = (ωt - kx2) ⇒ ∆ɸ = k (∆x) ⇒ (∆ɸ) ⇒ ɸ1 - ɸ2 = k(x2 - x1) So, phase difference, ∆ɸ = 2π/λ × Path difference (∆x)
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