Interference fringes are observed on a screen by illuminating two thin slits 1 mm apart with a light source `(lambda=632.8 nm)`. The distance between the screen and the slits is 100 cm. If a bright fringes is observed on a screen at a distance of 1.27 mm from the central bright fringe , then the path difference between the waves , which are reaching this point from the slits is close to :

Options

A. 1.27 `mu m`
B. `2.05 mu m `
C. `2nm `
D. 2.87 nm