se the worked example above to help you solve this problem. Light of wavelength $5\mathrm{.}84102$ nm is incident on a slit of width $0\mathrm{.}313$ mm$.$ The observing screen is placed $2\mathrm{.}12$ m from the slit. Find the positions of the first dark fringes and the width of the central bright fringe.

y$1=$ mmw $=$ mm

EXERCISEHINTS:$$GETTING STARTED $|$ I$\text{'}$M STUCK!

Determine the width of the first$-$order bright fringe, when the apparatus is in air.

w$1=$