Which statement correctly describes the properties or interactions of fundamental particles?
In β−\beta^-β− decay, a down quark in a neutron transforms into an up quark with the emission of a W+W^+W+ boson, which subsequently decays into an electron and an electron antineutrino.
An electron antineutrino (νˉe\bar{\nu}_eνˉe) is a lepton with a baryon number of 000, an electron lepton number of −1-1−1, and zero electric charge.
A neutral pion (π0\pi^0π0) is a baryon with a quark-antiquark composition of uuˉu\bar{u}uuˉ and a baryon number of 000.
The strong nuclear force has an attractive range of up to approximately 3 fm3\text{ fm}3 fm and is experienced equally by protons, neutrons, and electrons.
90 exam-style questions on OCR A A Level Physics Nuclear and particle physics, covering The nuclear atom, Fundamental particles, Radioactivity, and Nuclear fission and fusion. Each one has a worked solution and a mark scheme showing where the marks go.