Question

A double slit is illuminated with monochromatic light of wavelength 481 nm. The m=0 and m= 1 bright fringes are separated by
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Answer #1

Seperation between m=0 and m=1 bright fringe ia given by: y=Dλ/d

6.53cm=(90.1cm)*(481nm)/d

Slits Seperation :d=6636.77nm≈6637nm

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