Sodium light l = 589 nm is incident on a Young's double slit experiment. The separation between the two slits is 3.0 mm. If the screen is placed at a distance of 4m from the slits, locate the position of the tenth bright fringe on the screen.
The distance xn of the nth bright from the central fringe, in Young's experiment is
Given n = 10: l = 589 10-9m: D=4m d= 2 10-13
= 0.01178 m
