APFIVE Combined Interference and Diffraction
A double-slit experiment uses monochromatic light of wavelength λ. The distance between slits is d, and the screen is at distance L. At what angle from the central maximum will the first minimum of the single-slit diffraction pattern coincide with the fifth bright fringe of the double-slit interference pattern?
A
When the slit width equals d
B
When the slit width equals 5d
C
When the slit width equals d/5
D
When the slit width equals λ/5
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