It Is Desired to Obtain a Diffraction Pattern for Electrons

Multiple Choice

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10^-31 kg.
-What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

A) 1.5 × 10^-6 eV
B) 1.5 × 10^-4 eV
C) 1.5 × 10^-2 eV
D) 1.5 × 10² eV
E) 1.5 × 10⁸ eV