A second source is added 30m away from the first one, perpendicular to the line

Question

A second source is added 30m away from the first one,

perpendicular to the line between Source 1 and point P, as the

figure shows.

(a) Find the phase difference between the two waves at point P.

Determine whether constructive, partial or destructive

interference occurs at point P.

A second source is added 30m away from the first one, perpendicular to the line between Source 1 and point P, as the figure shows. Find the phase difference between the two waves at point P. Determine whether constructive, partial or destructive interference occurs at point P.

Explanation / Answer

so, phase difference = (2*pi*20)/10 = 4pi radians = 720 degrees.

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