Neutrons in a beam have the same de Broglie wavelength as alpha particles in a separate beam moving at a speed of 4.5 × 103 m s-1. What is the speed of the neutrons?
Take the mass of a neutron to be 1.67 × 10-27 kg and the mass of an alpha particle to be 6.64 × 10-27 kg.
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.