A two$-$slit experiment with slits separated by $4810-5$ m produces a second$-$order

maximum at an angle of $0\mathrm{.}0990.($a$)$ Find the wavelength of the light used in this

experiment. $($b$)$ If the slit separation is increased but the second$-$order maximum stays

at the same angle, does the wavelength increase, decrease, or stay the same? Explain.

$($c$)$ Calculate the wavelength for a slit separation of $6810-5$ m$.$