Worksheet: Particles and Antiparticles
1. An electron that is accelerated by a particular X-ray tube gains an energy of 100 keV. Convert this energy to
joules.
2. Find the minimum energy in joules of each of the photons released when an electron and positron
annihilate.
3. A photon has energy 1877 MeV. Which of these particles could it produce through pair production? What
happens to any excess energy?
a. Electron
b. Proton
c. Neutron
4. Find the energies, wavelengths and frequencies of the two photons which would result from the annihilation
of a neutron and antineutron if both particles had a kinetic energy of 5 MeV.
5. Ext: A muon is an elementary particle similar to the electron. Its mass is 0.106 GeVc-2. Find the rest energy.
Worksheet: Particles and Antiparticles
1. An electron that is accelerated by a particular X-ray tube gains an energy of 100 keV. Convert this energy to
joules.
2. Find the minimum energy in joules of each of the photons released when an electron and positron
annihilate.
3. A photon has energy 1877 MeV. Which of these particles could it produce through pair production? What
happens to any excess energy?
a. Electron
b. Proton
c. Neutron
4. Find the energies, wavelengths and frequencies of the two photons which would result from the annihilation
of a neutron and antineutron if both particles had a kinetic energy of 5 MeV.
5. Ext: A muon is an elementary particle similar to the electron. Its mass is 0.106 GeVc-2. Find the rest energy.
Worksheet: Particles and Antiparticles
1. An electron that is accelerated by a particular X-ray tube gains an energy of 100 keV. Convert this energy to
joules.
2. Find the minimum energy in joules of each of the photons released when an electron and positron
annihilate.
3. A photon has energy 1877 MeV. Which of these particles could it produce through pair production? What
happens to any excess energy?
a. Electron
b. Proton
c. Neutron
4. Find the energies, wavelengths and frequencies of the two photons which would result from the annihilation
of a neutron and antineutron if both particles had a kinetic energy of 5 MeV.
5. Ext: A muon is an elementary particle similar to the electron. Its mass is 0.106 GeVc-2. Find the rest energy.
Worksheet: Particles and Antiparticles
1. An electron that is accelerated by a particular X-ray tube gains an energy of 100 keV. Convert this energy to
joules.
2. Find the minimum energy in joules of each of the photons released when an electron and positron
annihilate.
3. A photon has energy 1877 MeV. Which of these particles could it produce through pair production? What
happens to any excess energy?
a. Electron
b. Proton
c. Neutron
4. Find the energies, wavelengths and frequencies of the two photons which would result from the annihilation
of a neutron and antineutron if both particles had a kinetic energy of 5 MeV.
5. Ext: A muon is an elementary particle similar to the electron. Its mass is 0.106 GeVc-2. Find the rest energy.