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Calculate the interference pattern that would be obtained if three identical slits instead of two were...

Calculate the interference pattern that would be obtained if three identical slits instead of two were used in Young’s experiment. (Assume equal spacing of the slits.) Make a rough plot.

This is the answer: l/l0 = 3 + 4 cos θ + 2 cos 2θ where θ = kyh/x

Treat k,y,h as some arbitrary constant

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