Question: Four coherent sources are located on the y axis at +3/4, + /4, - /4, and -3/4. They emit waves of wavelength and intensity

Four coherent sources are located on the y axis at +3λ/4, + λ/4, - λ/4, and -3λ/4. They emit waves of wavelength λ and intensity I0.

(a) Calculate the net intensity I as a function of the angle θ measured from the +x axis.

(b) Make a polar plot of I(θ).

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