Which graph shows how intensity I varies with angle θ when electrons are diffracted by a nucleus? A B C D - AQA - A-Level Physics - Question 29 - 2018 - Paper 2

When electrons are diffracted by a nucleus, the intensity of the diffracted waves typically exhibits a pattern that shows both peaks and troughs due to constructive and destructive interference. Therefore, we should look for a graph that has varying intensity values with pronounced peaks at certain angles, indicating where constructive interference occurs. The correct graph that matches this behavior is graph C, which appropriately displays these features.