X-rays
 

X-rays problem 8


Three sources of background radiation are listed.


  • cosmic rays


  • medical X-rays


  • radioactive emissions from radon gas from the ground


Which of these sources are naturally occurring?


  • 1 and 3 only

  • 1 only

  • 2 and 3 only

  • 2 only


 

main author and content editor: Olatunji Bello