What is the primary focus of Particle Physics?

• Study of subatomic particles

• Study of classical mechanics

• Study of celestial bodies

• Study of chemical reactions

Which of the following is a fundamental particle?

• Compound

• Atom

• Molecule

• Electron

What is the significance of pair production in particle physics?

• It relates to the motion of planets.

• It explains the behavior of gases.

• It involves the creation of particle-antiparticle pairs.

• It describes the formation of molecules.

Which of the following particles is an antiparticle of the electron?

• Photon

• Positron

• Neutron

• Proton

How does pair production occur?

• Through the fusion of two nuclei.

• Through the decay of a neutron.

• Through the interaction of photons with matter.

• Through the collision of two atoms.

Which of the following best describes an electron?

• A positively charged particle.

• A neutral particle.

• A particle with variable charge.

• A negatively charged particle.

What is the charge of a positron?

• Negative

• Variable

• Positive

• Neutral

Which of the following statements is true about particle-antiparticle pairs?

• They can exist indefinitely.

• They annihilate each other upon contact.

• They are always stable.

• They cannot be created.

What is the baryon number of a proton?

• -1/3

• +2/3

• -1

• +1

Which of the following processes is an example of beta decay?

• Electron capture by a proton.

• Neutron converting into a proton and emitting an electron.

• Proton and neutron fusion.

• Photon emission from an excited atom.