Physics 11th Chap 14 : Topic 10 - Maryam Publications

Physics Chapter 14 : Topic 10

Leptons

1 / 30

Electrons and neutrinos belong to the group of particles called:

A) Leptons

B) Baryons

C) Hadrons

D) Mesons

2 / 30

A lepton is a particle that is:

A) A fundamental particle not made of smaller particles

B) Made of a quark and antiquark

C) Always electrically charged

D) Made of three quarks

3 / 30

Which of the following is a lepton?

A) Proton

B) Neutron

C) Electron

D) Meson

4 / 30

Which pair contains only leptons?

A) Quark and electron

B) Meson and baryon

C) Proton and neutron

D) Electron and neutrino

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The electron is classified as a lepton because it:

A) experiences only strong interaction

B) is composed of a proton and neutron

C) is made of three quarks

D) has no known smaller components

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Neutrinos are classified as:

A) Mesons

B) Hadrons

C) Leptons

D) Baryons

7 / 30

Which statement about leptons is correct?

A) They always experience strong force.

B) They are all made of quarks.

C) They are fundamental particles.

D) They are all electrically charged.

8 / 30

Which particle is NOT a lepton?

A) Electron neutrino

B) Muon

C) Electron

D) Proton

9 / 30

The fundamental particle that carries negative electric charge is:

A) Proton

B) Photon

C) Neutrino

D) Electron

10 / 30

A neutrino differs from an electron because a neutrino:

A) is a hadron

B) has a positive charge

C) has no electric charge

D) is made of quarks

11 / 30

Which of the following correctly classifies particles?

A) Neutron $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

B) Electron $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

C) Meson $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

D) Proton $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

12 / 30

The main difference between leptons and hadrons is:

A) Hadrons are fundamental but leptons are not.

B) Leptons are fundamental, while hadrons contain quarks.

C) Leptons are made of quarks.

D) Both have identical structures.

13 / 30

Which particle is a fundamental particle?

A) Electron

B) Proton

C) Alpha particle

D) Neutron

14 / 30

Which group contains only fundamental particles?

A) Mesons and baryons

B) Protons and neutrons

C) Electrons and neutrinos

D) Alpha particles and nuclei

15 / 30

The absence of strong interaction for leptons means:

A) They do not experience the strong nuclear force.

B) They have no mass.

C) They cannot exist.

D) They cannot interact at all.

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Which particle is both fundamental and electrically charged?

A) Proton

B) Neutron

C) Neutrino

D) Electron

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Which particle is both fundamental and electrically neutral?

A) Electron

B) Proton

C) Neutrino

D) Alpha particle

18 / 30

The lepton family includes:

A) Up and down quarks

B) Electrons and neutrinos

C) Protons and neutrons

D) Mesons and baryons

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A particle is discovered with no smaller internal structure and no strong interaction. It is most likely:

A) A lepton

B) A hadron

C) A meson

D) A baryon

20 / 30

Which statement about electrons is correct?

A) They are baryons.

B) They are fundamental leptons.

C) They contain three smaller particles.

D) They are made of quarks.

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Which statement about neutrinos is correct?

A) They are made of one quark and one antiquark.

B) They are fundamental leptons.

C) They have a charge of $\mathbf{+ \ 1e}$.

D) They are baryons.

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Which particle is NOT composed of quarks?

A) Meson

B) Neutron

C) Proton

D) Electron

23 / 30

Which classification is correct?

A) Proton $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

B) Neutrino $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ lepton

C) Neutron $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ meson

D) Electron $\overset{\mathbf{\ \ \ \ \ \ \ \ \ \ \ }}{\rightarrow}$ hadron

24 / 30

Leptons are different from baryons because:

A) Baryons are made of quarks while leptons are fundamental.

B) Leptons contain three quarks.

C) Leptons have no mass.

D) Baryons have no charge.

25 / 30

Which particle pair demonstrates the lepton category?

A) Meson and baryon

B) Electron and electron neutrino

C) Up quark and down quark

D) Proton and neutron

26 / 30

The electron belongs to which category of elementary particles?

A) Baryon

B) Quark

C) Hadron

D) Lepton

27 / 30

A neutrino cannot be classified as a hadron because:

A) It is not made of quarks.

B) It has no mass.

C) It has a positive charge.

D) It contains three quarks.

28 / 30

Which statement is true about leptons?

A) They include electrons and neutrinos.

B) They are all made of three quarks.

C) They always have positive charge.

D) They include only protons.

29 / 30

The particle responsible for electric charge in ordinary matter and classified as a lepton is:

A) Neutron

B) Photon

C) Neutrino

D) Electron

30 / 30

Which statement best describes leptons?

A) They are composite particles formed from quarks.

B) They are fundamental particles including electrons and neutrinos.

C) They are only found inside nuclei.

D) They are particles made of photons.

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