Light with a Wavelength of 644 Nm Uniformly Illuminates a Single

question 13

Multiple Choice

Light with a wavelength of 644 nm uniformly illuminates a single slit. What is the width of the slit if the first-order dark fringe is located at $\theta$ = 0.125°?

• A)9.42 × 10^-4 m
• B)7.60 × 10^-4 m
• C)4.71 × 10^-4 m
• D)3.80 × 10^-4 m
• E)2.95 × 10^-4 m

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