Other questions in this quiz

2. what happens when an optic fibre is bent

  • the critical angle is the same, get total internal refraction
  • the critical angle stays the same, get total internal reflection
  • the critical angle gets bigger, get total internal refraction
  • the critical angle gets smaller, get total internal reflection

3. what does gamma radiation kill in the body

  • it will kill the cell that is chosen
  • it will go through cm of cells
  • it will kill the cells around it
  • it will kill no cells

4. advantage of using cobalt-60 in radiotherapy

  • it is easy to make in a nuclear reactor
  • it can be made all the time
  • it is easily made in a school lab
  • it is cheaper to use

5. 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

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