1. The problem statement, all variables and given/known data 6. S1 and S2 in the diagram are effective point sources of radiation, excited by the same oscillator. They are coherent and in phase with each other. Placed 4.0 y m apart, they emit equal amounts of power in the form of 1.0 m wavelength electromagnetic waves. (a) Find the positions of the first (that is, the nearest), the second, and the third maxima of the received signal, as the detector is moved out along axis OX. (b) Is the intensity at the nearest minimum equal to zero? Justify your answer. [Ans: (a) 7/6m, 3m, 7.5m; (b) No] the diagram looks like this ^y | | | |*S2 | | | | | O*S1______________________>X where d is the distance between S1 and S2 2. Relevant equations 3. The attempt at a solution (a) let dx = the distance along the x axis to the respective minima. so sin θ = d/√(dx2+d2) for maxima's dsinθ=mλ for m=0 (the first maxima) dsinθ = 0 so x =1 -d2 x =√15 m but this is wrong but I'm not sure where I have gone wrong.. it should be 7/6 m for m=0.