Question 1

A nucleus of a particular element decays, emitting a series of α and β– particles.

Which of the following series of emissions would result in an isotope of the original element?

  A  

1 α and 1 β–

  B  

1 α and 2 β–

  C  

2 α and 1 β–


  D  

2 α and 2 β–


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Question 2

Which equation shows the process of annihilation?

π− + π→γ
p + pˉ​→γ + γ
β− + p→γ
γ + γ→β+ + β−

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Question 3

Which of the following is not made of quarks?


  A  

kaon

  B  

muon

  C  

neutron

  D  

pion

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Question 4

A particular baryon has a quark structure dss and decays by the weak interaction.

What are possible decay products of this baryon?

The quark structure of Λ0 is uds.

  A  

Λ0 + π−

  B  

n + π−

  C  

Λ0 + e−

  D  

K+ + K0

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Question 5

What are the products when a free neutron decays?

P + e− + νe​
P + e+ + νˉe​
P + e− + νˉe​
P + e+ + νe​

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Question 6

Which decay of a positive kaon (K+) particle is possible?

K+→ π0 + e + + νˉe​
K+→ p + νμ​
K+→π+ + π+ + π0
K+→ μ+ + νμ​

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Question 7

The quark combination of a particle is sū.

Which is true for this particle?

  A  

it has a baryon number of 1

  B  

it has a charge of -1.6 x 10-19 C

  C  

it is a pion

  D  

it has a strangeness of -1/3

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Question 8

Uranium-236 has 92 protons. It undergoes a series of decays to produce Lead -204. Lead has 82 protons

How many alpha decays are involved in this decay?

  A  

5

  B  

6

  C  

8

  D  

10

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Question 9

The decay of a neutral kaon K0 is given by the equation

K0→ X + Y + νˉe​

What are X and Y?

e+ and e−
μ+ and e−
π+ and e−
π− and e+

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Question 10

Fluoride ions are produced by the addition of a single electron to an atom of fluorine F-19. Fluorine has an atomic number of 9.

What is the magnitude of specific charge of the fluoride ion?

  A  

3.2 × 10−26 C kg–1

  B  

8.4 × 10−21 C kg–1

  C  

5.0 × 106 C kg–1


  D  

4.5 × 107 C kg–1

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