A double slit separated by $0\mathrm{.}0572$ mm is placed $1\mathrm{.}45$ m from a screen.

$($a$)$ If yellow light of wavelength $590$ nm strikes the double slit, what is the separation between the zeroth$-$order and first$-$order maxima on the screen?

cm

$($b$)$ If blue light of wavelength $411$ nm strikes the double slit, what is the separation between the second$-$order and fourth$-$order maxima?

cm