A beam of light of wavelength 600 nm from a distant source
falls on a single slit 1.0 mm wide and the resulting diffraction pattern is
observed on a screen 2m away. What is the distance between the first dark
fringe on either side of the central bright fringe?
A. `1.2 cm`
B. `1.2 mm`
C. `2.4 cm`
D. `2.4 mm`