First Term Quiz - Physics 12 Reviewer

What quantum number differentiates quarks from leptons?

• Color charge

• Spin

• Electric charge

• Mass

What property of neutrinos makes their detection challenging?

• Zero mass

• Lack of electric charge

• High interaction with the strong force

• Heavy mass

Why are free quarks never observed in nature?

• They are extremely unstable.

• The strong force confines them within hadrons due to color confinement.

• They quickly decay into leptons.

• They form into photons upon release.

Which force is responsible for the decay of a neutron into a proton?

• Strong force

• Electromagnetic force

• Weak force

• Gravitational force

Which of the following particles is a gauge boson associated with the strong force?

• Photon

• W boson

• Gluon

• Higgs boson

How does the mass of the top quark compare to other quarks?

• It is the lightest quark.

• It has the same mass as the up quark.

• It is the heaviest quark.

• It has a mass between up and down quarks.

Which particle is a mediator of the weak force?

• Photon

• Gluon

• Z boson

• Graviton

What combination of quarks makes up a neutron?

• Two up quarks, one down quark

• One up quark, two down quarks

• Three up quarks

• One up quark, two strange quarks

How do quarks interact within protons and neutrons?

• Via the electromagnetic force

• Via the weak force through W bosons

• Via gravitational interactions

• Via the strong force through gluon exchange

Which of the following statements best explains why leptons do not experience the strong force?

• Leptons have no electric charge.

• Leptons are massless.

• Leptons do not possess color charge.

• Leptons have no spin.