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2. which type of radiation comes out of cobalt-60

  • gamma
  • beta
  • alpha

3. what is cobalt-60 used for

  • general therapy
  • thyroid gland
  • treating cancer
  • treating cell repair

4. which type of radiation comes from iodine 131

  • gamma
  • gamma and beta
  • beta and alpha
  • gamma and alpha

5. define critical angle

  • the biggest possible angle of incidence for total internal refraction to occur
  • the smallest possible angle of incidence for total internal reflection to occur
  • the smallest possible angle of incidence for total internal refraction to occur
  • the biggest possible angle of incidence for total internal reflection to occur
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