Particles Quiz

An atom of oxygen-15 (¹⁵₈O) gains two electrons to form an ion.

What is the specific charge of the ion?

• −1.3 × 10⁷ C kg⁻¹

• −2.4 × 10⁷ C kg⁻¹

• −5.1 × 10⁷ C kg⁻¹

• −6.4 × 10⁷ C kg⁻¹

Which is an exchange particle for the weak interaction?

• Lepton

• Photon

• Pion

• W⁺

A particular baryon has a quark structure dss and decays by the weak interaction.

What are possible decay products of this baryon?

The quark structure of Λ⁰ is uds.

• Λ⁰ + π⁻

• n + π⁻

• Λ⁰ + e⁻

• K⁺ + K⁰

A muon and an antimuon annihilate to produce the minimum number of photons.

What is the maximum wavelength of the photons?

• 5.9 × 10⁻¹⁵ m

• 1.2 × 10⁻¹⁴ m

• 5.9 × 10⁻⁹ m

• 1.2 × 10⁻⁸ m

Which row describes the nature of the strong nuclear force between two nucleons at separations of 0.25 fm, 2.0 fm and 8.0 fm?

• A

• B

• C

• D

What are the products when a free neutron decays?

• A

• B

• C

• D

Which shows the classification of particles?

• 
• 
• 
• 

The gravitational force is one of the four fundamental forces.

The ticks in the table match particles with the other fundamental forces.

In which row is the particle matched to the only other fundamental forces it experiences?

• A

• B

• C

• D

The proton number of uranium is 92 and the proton number of radon is 88

Which series of decays turns a uranium nucleus into a radon nucleus?

• A

• B

• C

• D

The diagram represents a particle interaction.

Which option identifies particles E, F and G

• E - up quark

  F - down quark

  G - neutrino

• E - down quark

  F - up quark

  G - neutrino

• E - up quark

  F - down quark

  G - antineutrino

• E - down quark

  F - up quark

  G - antineutrino