Physics 9702 · AS & A Level · Fundamental particles
Fundamental particles — practice question
The antineutron is the neutron’s antiparticle counterpart. Its quarks are the antiparticles of the quarks found in a neutron. The elementary charge is $e$.
(a)[3]
In Table 8.1, give the flavour and charge of the three antiquarks that make up the antineutron.
(b)[2]
In $\beta^{-}$ decay, a neutron transforms into a proton. The theory predicts that an antineutron should transform into an antiproton. A particle and an antiparticle should also be seen. State the names of the particle and the antiparticle.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “All three quark flavours named correctly” …