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DP IB Physics: HL

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Home / IB / Physics: HL / DP / Topic Questions / 7. Atomic, Nuclear & Particle Physics / 7.3 The Structure of Matter / Multiple Choice


7.3 The Structure of Matter

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Question 1

Marks: 1

Using conservation of charge, determine which of the following is the correct quark composition of a proton?

  • sss

  • uud

  • ddd

  • uds

Choose your answer
  
Key Concepts
Quarks & Leptons

Question 2

Marks: 1

Which of the following particles has a baryon number of zero?

  • antineutron

  • neutron

  • kaon

  • proton

Choose your answer
  
Key Concepts
Hadrons, Baryons & Mesons

Question 3

Marks: 1

Beta-minus decay can be represented in terms of fundamental particles

d rightwards arrow u plus e to the power of minus plus X

What type of particle is particle X?

  • quark

  • photon

  • lepton

  • hadron

Choose your answer
  
Key Concepts
Hadrons, Baryons & Mesons

Question 4

Marks: 1

Which of the following is a meson?

  • u d d

  • stack u d s with bar on top

  • nu subscript e

  • u d with bar on top

Choose your answer
  
Key Concepts
Hadrons, Baryons & Mesons

Question 5

Marks: 1

Which of the following was not an observation made by the Rutherford-Geiger-Marsden experiment?

  • Most of the α-particles went straight through the foil

  • Some α-particles deflected through small angles of less than 10°

  • Only a small number of α-particles deflected straight back at angles greater than 90°

  • The gold foil emits alpha particles

Choose your answer
  
Key Concepts
The Rutherford-Geiger-Marsden Experiment

Question 6

Marks: 1

Which of the following is a correct statement about Feynman diagrams?

  • The vertical axis represents time

  • Gauge bosons are represented by a wavy/dashed line, or a helix

  • Only three particles may go into or out of a vertex

  • Particle lines can cross over

Choose your answer
  
Key Concepts
Feynman Diagrams

Question 7

Marks: 1

Which of the following is not conserved during weak interactions?

  • Baryon number

  • Lepton number

  • Strangeness

  • Charge

Choose your answer
  
Key Concepts
Particle Conservation Laws

Question 8

Marks: 1

The Feynman diagram shows a particle interaction involving a W+ boson.

7-3-atomic-nuclear--particle-physics-sl-mcqs-easy-q8-question

Which two particles are the products of the interaction?

  • Q and S

  • P and Q

  • P and S

  • R and S

Choose your answer
  
Key Concepts
Feynman Diagrams

Question 9

Marks: 1

The standard model classifies particles into hadrons, leptons, mesons and baryons. The diagram below shows some examples of these types of particles.

7-3-atomic-nuclear--particle-physics-sl-mcqs-easy-q9-question-1

Which row shows the correct position of each type of particle in the diagram?

 

Hadrons

Baryons

Leptons

Mesons
A

1

2

3

4
B

2

4

1

3
C

4

3

2

1
D

3

1

4

2

    Choose your answer
      
    Key Concepts
    The Standard Model of Particle Physics

    Question 10

    Marks: 1

    Which answer is not a feature of the strong nuclear force?

    • The strong nuclear force is repulsive at nucleon separations closer than around 0.5 fm

    • The strong nuclear force is attractive up to around 3.0 fm

    • The strong nuclear force has an infinite range

    • The strong nuclear force reaches a maximum attractive value at around 1.0 fm

    Choose your answer
      
    Key Concepts
    Fundamental Forces


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