In a Single-Slit Diffraction Experiment, a Beam of Monochromatic Light

Multiple Choice

In a single-slit diffraction experiment, a beam of monochromatic light of wavelength 630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the screen is 1.80 m, what is the width of the central bright fringe?

A) 1.94 mm
B) 2.94 mm
C) 3.54 mm
D) 5.67 mm
E) 6.94 mm