Helium-Neon Laser Light (λ = 632

Multiple Choice

Helium-neon laser light (λ = 632.8 nm) is sent through a single slit of width 0.55 mm.What is the width of the central maximum on a screen 1.4 m in back of the slit? (1 nm = 10−⁹ m)

A) 1.6E-3 m
B) 8.0E-4 m
C) 3.2E-3 m
D) 7.5E-5 m
E) 1.5E-4 m