40. Light from a helium-neon laser (λ = 632.8 nm) is incident upon a 0.20-mm-wide slit. What is the
問題詳情
40. Light from a helium-neon laser (λ = 632.8 nm) is incident upon a 0.20-mm-wide slit. What is the total width of the central maximum 2.00 m from the slit? (A)0.63 mm (B)3.16 mm (C)0.63 cm (D)1.27 cm (E)6.32cm