AQA A Level Physics: Particle Physics and Forces

What are the four fundamental forces recognized in nature?

• Electromagnetism, strong nuclear force, gravity, weak nuclear force

• Electromagnetism, weak nuclear force, magnetism, electricity

• Gravity, friction, strong nuclear force, weak nuclear force

• Electromagnetism, gravity, friction, air resistance

In classical physics, how is the interaction between charges described?

• Through direct contact

• Via exchange particles

• By gravitational pull only

• Through fields and action at a distance

What is the role of bosons in quantum physics?

• They are only theoretical particles

• They are a type of neutron

• They act as force carriers

• They are types of quarks

Which boson is associated with the electromagnetic force?

• W plus boson

• Virtual photon

• Pion

• Gluon

What particles are theorized but not yet discovered?

• Gluons and pions

• Gravitons and virtual photons

• Virtual photons and gluons

• Gravitons and Higgs boson

Which boson is involved in the weak nuclear force?

• Gluon

• Virtual photon

• W plus and W minus bosons

• Pion

What occurs during beta decay of a neutron?

• A neutron splits into two neutrons

• A neutron decays into a proton, emitting an electron and an anti-neutrino

• A neutron decays into an electron only

• A neutron and a proton combine to form an electron

What is the significance of Feynman diagrams?

• They help visualize particle interactions

• They describe chemical reactions

• They predict the existence of new particles

• They are used to calculate gravitational forces

What is electron capture?

• An electron and a proton collide at high speed

• A process where an electron and a proton combine, producing a neutron and a neutrino

• A proton captures an electron, emitting a photon

• An electron absorbs a neutron, emitting a proton

What are mesons and what role do they play?

• Subatomic particles without any charge

• Particles that mediate electromagnetic interactions

• Theoretical particles that explain gravity

• Particles that carry the strong force between protons and neutrons