Sodium light `(lambda= 6xx 10^(-7)m)` is used to produce interference pattern. The observed fringe width is 0.12 mm. The angle between two interfering wave trains, is

In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to:

In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to: