Particle Physics: Delve into the Fundamental Building Blocks of the Universe

Question 1

In the Standard Model of particle physics, which of the following is considered a fundamental particle?

Accepted Answer

Electron

Answer

Neutron

Answer

Helium nucleus

Answer

Water molecule

Question 2

The force carrier responsible for the interaction known as the strong nuclear force is the:

Accepted Answer

Gluon

Answer

Photon

Answer

W and Z bosons

Answer

Graviton

Question 3

Which of the following particles carries a negative electric charge and has a mass approximately 1/1836 the mass of a proton?

Accepted Answer

Electron

Answer

Muon

Answer

Tau

Answer

Neutrino

Question 4

The particle believed to be associated with the Higgs field is known as the:

Accepted Answer

Higgs boson

Answer

Photon

Answer

Gluon

Answer

W and Z bosons

Question 5

The symmetry that describes the interchangeability of protons and neutrons is called:

Accepted Answer

Isospin symmetry

Answer

Charge symmetry

Answer

Parity symmetry

Answer

Time-reversal symmetry

Question 6

Among the fundamental forces, the weakest is the:

Accepted Answer

Weak nuclear force

Answer

Gravitational force

Answer

Electromagnetic force

Answer

Strong nuclear force

Question 7

The approximate mass of the Higgs boson, as determined through experimental measurements, is:

Accepted Answer

125 GeV/c²

Answer

1 TeV/c²

Answer

100 MeV/c²

Answer

1 kg

Question 8

Which characteristic is unique to neutrinos?

Accepted Answer

Interacting solely through the weak nuclear force

Answer

Possessing a positive charge (+1)

Answer

Consisting of three quarks

Answer

Having a mass greater than protons

Question 9

The particle emitted during radioactive decay, resulting in a change in the atomic number of an element, is the:

Accepted Answer

Beta particle

Answer

Electron

Answer

Neutron

Answer

Alpha particle

Question 10

Among the following fundamental particles, which has the greatest mass?

Accepted Answer

Top quark

Answer

Electron

Answer

Quark

Answer

W boson

Question 11

Which of the following is NOT a fundamental conservation law in particle physics?

Accepted Answer

Conservation of speed

Answer

Conservation of energy

Answer

Conservation of momentum

Answer

Conservation of angular momentum

Question 12

A defining characteristic of the Higgs boson is that it:

Accepted Answer

Is responsible for the mass of other particles.

Answer

Has zero spin.

Answer

Is a lepton.

Answer

Is a baryon.

Question 13

Which of the following is **not** a fundamental particle in the Standard Model?

Accepted Answer

Neutron

Answer

Electron

Answer

Photon

Answer

Quark

Question 14

Which of the following particles is classified as a vector boson?

Accepted Answer

Photon

Answer

Electron

Answer

Quark

Answer

Neutron

Question 15

What is the name of the theory that unifies the electromagnetic and weak nuclear forces?

Accepted Answer

Electroweak theory

Answer

General relativity

Answer

Quantum chromodynamics

Answer

Special relativity

Question 16

Which of the following characteristics is associated with hadrons?

Accepted Answer

Composed of quarks

Answer

Interacts via the electromagnetic force

Answer

Has a zero baryon number

Question 17

What fundamental interaction is responsible for changing the flavor of quarks?

Accepted Answer

Weak interaction

Answer

Electromagnetic interaction

Answer

Strong interaction

Answer

Gravitational interaction

Question 18

What is the primary role of the Higgs boson in particle physics?

Accepted Answer

Provides mass to other particles

Answer

Belongs to the category of hadrons

Answer

Acts as a vector boson

Question 19

What is the overarching goal that particle physicists strive towards?

Accepted Answer

Unifying all fundamental forces and particles into a single theory

Answer

Discovering new particles

Answer

Determining the origin of the universe