(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

So I'm trying to determine the slit separation of a 2-D grid (as I understanding it, basically a grid with a lot of parallel, equally spaced slits in the x and y directions). I know I have to use some form of the formula d*sin(theta) = m*lambda, and I'm having some trouble deciding which one. I'd appreciate it if someone could clarify if these are correct:

d*sin(theta) = m*lambda for constructive interference, double slit

d*sin(theta) = (m+0.5)*lambda for destructive interference, double slit

b*sin(theta) = m*lambda for destructive interference, single slit

b*sin(theta) = (m+0.5)*lambda for destructive interference, single slit

where d=slit spacing and b=slit width

2. Relevant equations

3. The attempt at a solution

If my equations are right, then I would use the one for constructive interference of a double slit?

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# Homework Help: Interference/Diffraction formulas

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