Other questions in this quiz

2. define critical angle

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

3. give another advantage of using cobalt-60 in radiotherapy

  • it can be ordered in straight away
  • has a half life of 5.3 years so it will not need replaced as much
  • has a half life of 6.3 years so it will not need replaced as much
  • it lasts all the time

4. what does alpha radiation kill in the body

  • kills just 1 cell
  • kills no cells
  • kills the next cell
  • kills all the cells near

5. why is it vital to calculate the correct dose?

  • so that it doesn't run out fast
  • the amount of money spent will cover the right amount needed
  • too much of it could kill healthy cells
  • so that there is no waste

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