A beam of light of wave length 600 nm fr...

A beam of light of wave length 600 nm from a distance source fall on a single slit 1mm wide and a resulting. Diffraction pattern is observed on a screen 2m away. The distance between the first dark fringes on either side of central bright fringe is

1.2 cm

1.2 mm

2.4 cm

2.4 mm

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