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Interference-Diffraction Pattern

The interference pattern below is produced by an equally spaced pattern of N identical slits. The wavelength of the light source is l = nm and the intensity at q = 0° is I = W/m2.

a) By how many slits is this pattern made?

N =

b) Determine the slit width.

a = nm

c) Determine the center-to-center spacing of the slits.

d = nm

d) Determine the intensity at q = 5°. Assume that this angle is a maximum of the N-slit interference pattern..

I(q = 5°) = W/m2