A beam of electrons with a kinetic energy of 1 keV is diffracted as it passes through a polycrystalline metal foil. The metal exhibits a cubic crystal structure with a lattice spacing of 1 Å. Given the constants m, e, h, and c: Calculate the wavelength of the electrons.
1
\( \theta = 10.98^\circ \)
2
\( \theta = 11.08^\circ \)
3
\( \theta = 11.18^\circ \)
4
\( \theta = 11.28^\circ \)