Which of the following modifications to the setup could produce the second pattern?
Decreasing the potential difference used to accelerate the electrons
Replacing the polycrystalline specimen with one having a larger spacing between its atomic planes
Moving the fluorescent screen closer to the specimen
Replacing the electrons with particles of a larger mass but the same kinetic energy
26 exam-style questions on AQA A Level Physics Wave-particle duality (A-level only), covering Newton's corpuscular theory of light (A-level only), Significance of Young's double slits experiment (A-level only), Electromagnetic waves (A-level only), The discovery of photoelectricity (A-level only), Wave-particle duality (A-level only), and Electron microscopes (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.