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In a double-slit experiment, the slit separation d is 0.5 mm, and the slit width a...

In a double-slit experiment, the slit separation d is 0.5 mm, and the slit width a is 0.1 mm. Consider the interference of the light from the two slits and also the diffraction of the light through each slit.

(a) How many bright interference fringes are within the central peak of the diffraction envelope?

(b) How many bright fringes are within either of the first side peaks of the diffraction envelope?

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