In the Double- Slit Experiment with Electrons, Suppose That the Observer

Multiple Choice

In the double- slit experiment with electrons, suppose that the observer uses a detector to determine through which slit the electron actually passes. Does this affect the outcome of the experiment, and why or why not?

A) No, the pattern on the screen remains an interference pattern, regardless of the detector.
B) No, the pattern on the screen remains a non- interference pattern, regardless of the detector.
C) Yes, the detector causes the pattern on the screen to suddenly change from an interference pattern [with no detector] to two tiny spots directly behind each slit [with the detector].
D) Yes, the detector causes the pattern on the screen to suddenly change from an interference pattern [with no detector] to a non- interference pattern [with the detector].
E) Yes, the detector causes the pattern on the screen to suddenly change from a non- interference pattern [with no detector] to an interference pattern [with the detector].