College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 6

A double slit separated by 0.058 0 mm is placed 1.50 m from a screen. (a) If yellow light of wavelength 588 nm strikes the double slit, what is the separation between the zeroth-order and first-order maxima on the screen (b) If blue light of wavelength 412 nm strikes the double slit, what is the separation between the second-order and fourth-order maxima