Radiation 101
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Questions and Answers

Which type of radiation source is formed as a result of cosmic ray interactions?

  • Man-made radiation
  • Radionuclides in human body
  • Terrestrial radiation
  • Cosmogenic radiation (correct)

Which decay series originates with 238U?

  • The actinium series
  • The neptunium series
  • The uranium series (correct)
  • The thorium series

Which nuclide has a half-life of 2E18 years?

  • 232Th
  • 235U
  • 209Bi (correct)
  • 241Pu

Which nuclide is a member of the decay series that originated with 235U?

<p>235U (A)</p> Signup and view all the answers

Which nuclide has a half-life of 1.41 x 1010 years?

<p>235U (B)</p> Signup and view all the answers

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