Determine whether an interference pattern is observed on the other side of the slits in each experiment.

a. An electron beam is aimed at two closely spaced slits. The beam produces only one electron per minute.

b. An electron beam is aimed at two closely spaced slits. A light beam is placed at each slit to determine when an electron goes through the slit.

c. A high-intensity light beam is aimed at two closely spaced slits.

d. A gun is fired at a solid wall containing two closely spaced slits. (Will the bullets that pass through the slits form an interference pattern on the other side of the solid wall?)