The light source for a double slit experiment has a wavelength of 590 nm. The slit separation is 0.12x10^-3. A screen is placed at a distance of L from the slits. On this screen, the seconf bright fringe (second order maximum) appears at 0.05 m from the central maximum. Note that you can use the small angle approximation.
a) Find the distance L of the screen to the slits.
b) Find the width of the central bright fringe.