Question

Two coherent wave sources 5 cm apart make ripples in a water tank, producing a Moire pattern. The wavelength of the waves is 3 cm. 1) Find the angle between the perpendicular bisector of the line joining the two sources and the direction of the 1st non-central maximum. 2) What is the direction of this 1st maximum if the two sources operate with opposite phases?. 3) How do the answers to 1) and 2) change if the wavelength is changed to 6 cm?

Answer 1

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