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Worksheet: Positrons

Q1:

The diagram shows an electron and a positron colliding. The two particles are destroyed and a high-energy photon is created. What is the name given to this process?

  • ACompton scattering
  • BPair production
  • CRayleigh scattering
  • DAnnihilation
  • EScintillation

Q2:

Which of the following statements correctly describe the similarities and differences between electrons and positrons?

  1. Electrons and positrons have different masses.
  2. Electrons and positrons have opposite electric charges.
  3. Electrons and positrons have the same mass.
  4. Electrons and positrons have the same electric charge.
  • Aa and c
  • Ba and d
  • Cc and d
  • Db and c
  • Eb and d

Q3:

What particle is the antiparticle of the electron?

  • AThe neutron
  • BThe proton
  • CThe pi meson
  • DThe positron
  • EThe photon

Q4:

What particle is the antiparticle of the positron?

  • AThe proton
  • BThe neutron
  • CThe photon
  • DThe electron
  • EThe neutrino

Q5:

What is the relative charge of a positron?

  • A0
  • B βˆ’ 1
  • C+2
  • D+1
  • E βˆ’ 2

Q6:

The antiparticle of a particle has the same as that particle but has an opposite .

  • Amass, magnetic moment
  • Belectric charge, magnetic moment
  • Celectric charge, spin
  • Dmass, electric charge
  • Emagnetic moment, spin

Q7:

Which of the following symbols denotes a positron?

  • A 𝑝
  • B 𝐡 
  • C 𝑏
  • D 𝛽 
  • E 𝛽 

Q8:

Which of the following particles has the same electric charge as a positron?

  • AAn electron
  • BA neutron
  • CA photon
  • DA proton
  • EA neutrino

Q9:

Which of the following symbols denotes a positron?

  • A 𝑝
  • B 𝑒 
  • C 𝑛
  • D 𝑒 
  • E 𝛽 

Q10:

When a positron collides with an electron, the two particles will be destroyed and a number of photons will be produced. What is the name given to this process?

  • ACompton scattering
  • BPair production
  • CDestruction
  • DAnnihilation
  • EDecimation