1. If light shines on two narrow parallel slits separated by a distance d, it produces a diffraction patternon a screen a distance z away with intensity maxima separated by s = z)/d. This will also occur withelectrons if the dimensions of the experiment are adequately scaled down. If we have a screen withd = 5µm, z = 50 mm, and observed spacing of the electron maxima s = 3.569 nm, calculate the kineticenergy of the incident electrons. (Hint: remember the de Broglie relation, as well as the relativisticrelation between energy and momentum).

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