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) Baryons

B) Mesons

C) Hadrons

D) Leptons

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A lepton is a particle that is:

A) A fundamental particle not made of smaller particles

B) Made of three quarks

C) Made of a quark and antiquark

D) Always electrically charged

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Which of the following is a lepton?

A) Electron

B) Meson

C) Proton

D) Neutron

4 / 30

Which pair contains only leptons?

A) Electron and neutrino

B) Meson and baryon

C) Quark and electron

D) Proton and neutron

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The electron is classified as a lepton because it:

A) is made of three quarks

B) has no known smaller components

C) is composed of a proton and neutron

D) experiences only strong interaction

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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 are fundamental particles.

B) They are all electrically charged.

C) They always experience strong force.

D) They are all made of quarks.

8 / 30

Which particle is NOT a lepton?

A) Muon

B) Electron

C) Proton

D) Electron neutrino

9 / 30

The fundamental particle that carries negative electric charge is:

A) Proton

B) Electron

C) Photon

D) Neutrino

10 / 30

A neutrino differs from an electron because a neutrino:

A) has no electric charge

B) has a positive charge

C) is made of quarks

D) is a hadron

11 / 30

Which of the following correctly classifies particles?

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

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

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

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

12 / 30

The main difference between leptons and hadrons is:

A) Leptons are made of quarks.

B) Hadrons are fundamental but leptons are not.

C) Leptons are fundamental, while hadrons contain quarks.

D) Both have identical structures.

13 / 30

Which particle is a fundamental particle?

A) Alpha particle

B) Proton

C) Electron

D) Neutron

14 / 30

Which group contains only fundamental particles?

A) Electrons and neutrinos

B) Alpha particles and nuclei

C) Protons and neutrons

D) Mesons and baryons

15 / 30

The absence of strong interaction for leptons means:

A) They have no mass.

B) They do not experience the strong nuclear force.

C) They cannot interact at all.

D) They cannot exist.

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Which particle is both fundamental and electrically charged?

A) Neutrino

B) Proton

C) Electron

D) Neutron

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Which particle is both fundamental and electrically neutral?

A) Neutrino

B) Proton

C) Alpha particle

D) Electron

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The lepton family includes:

A) Mesons and baryons

B) Protons and neutrons

C) Electrons and neutrinos

D) Up and down quarks

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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 meson

C) A baryon

D) A hadron

20 / 30

Which statement about electrons is correct?

A) They are made of quarks.

B) They contain three smaller particles.

C) They are fundamental leptons.

D) They are baryons.

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Which statement about neutrinos is correct?

A) They are baryons.

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

C) They are fundamental leptons.

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

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Which particle is NOT composed of quarks?

A) Neutron

B) Meson

C) Proton

D) Electron

23 / 30

Which classification is correct?

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

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

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

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 have no mass.

C) Baryons have no charge.

D) Leptons contain three quarks.

25 / 30

Which particle pair demonstrates the lepton category?

A) Up quark and down quark

B) Electron and electron neutrino

C) Meson and baryon

D) Proton and neutron

26 / 30

The electron belongs to which category of elementary particles?

A) Quark

B) Hadron

C) Baryon

D) Lepton

27 / 30

A neutrino cannot be classified as a hadron because:

A) It has no mass.

B) It contains three quarks.

C) It has a positive charge.

D) It is not made of quarks.

28 / 30

Which statement is true about leptons?

A) They include only protons.

B) They include electrons and neutrinos.

C) They always have positive charge.

D) They are all made of three quarks.

29 / 30

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

A) Electron

B) Photon

C) Neutron

D) Neutrino

30 / 30

Which statement best describes leptons?

A) They are only found inside nuclei.

B) They are fundamental particles including electrons and neutrinos.

C) They are particles made of photons.

D) They are composite particles formed from quarks.

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