A-Level Particle Physics.

What is meant by “Annihilation”. [1 mark}

Mass of particle and antiparticle convert to a pair of photons of electromagnetic radiation.

What is meant by “pair production”. [1 mark]

When photons of electromagnetic radiation converted to particle and antiparticle

Give three example of fundamental particle. [3 marks]

Gauge bosons, Leptons, Quarks.

What is a hadron. [1 mark]

Particle made from quarks.

What is a baryon. [1 mark]

Particle made from three quarks.

What is a meson. [1 mark]

Particle made from one quark and one antiparticle.

Which particle experience strong nuclear force.

Meson

State the quark structure of a baryon with strangeness of 1 and a charge of zero.

Use (-) to represent antiparticle.

Use physics data and formula sheet to help you.

[1 mark]

ud-s

Give three exchange particle that can produce weak nuclear force. [3 marks]

W+, W-, boson

Which two fundamental force interaction will affect all particle. [2 marks]

Weak nuclear and gravity.

State two things exchange particle can transfer in an interaction. [2 marks]

Transfer force and charge.

When beta minus decay occur. [1 mark]

Too many neutron in the nucleus.

When beta plus decay occur. [1 mark]

Too few neutron in the nucleus.

What is the product of beta minus decay. [3 marks]

proton, electron and antineutrino

What is the product of beta plus decay. [3 marks]

neutron, positron and neutrino