Imagine the following Young's double-slit experiment using matter rather than light: electrons are accelerated through a potential difference of 12 V pass through two closely spaced slits separated by a distance d, and create an interference pattern.
(a) Using Example 27-11 and Section 24-3 as guides, find the required value for d if the first-order interference fringe is to be produced at an angle of 10°.
(b) Given the approximate size of atoms, would it be possible to construct the required two-slit set-up for this experiment?