A Narrow Slit Is Illuminated with Sodium Yellow Light of Wavelength

Multiple Choice

A narrow slit is illuminated with sodium yellow light of wavelength 589 nm. If the central maximum extends to ±30.0°, how wide is the slit?

A) 0.500 mm
B) 2.20 × 10−⁶ m
C) 3.33 × 10−⁵ m
D) 1.18 μm
E) 5.89 μm