The linear non-threshold model is used to predict the chance of acquiring radiation-induced cancer after exposure to any dose above:

The linear non-threshold model is used to predict the chance of acquiring radiation-induced cancer after exposure to any dose above:

• A. 0 millisieverts (mSv)
• B. 5 millisieverts (mSv)
• C. 10 millisieverts (mSv)
• D. 50 millisieverts (mSv)

Answer: (A)

The key idea here is that the linear non-threshold model says cancer risk rises in direct proportion to radiation dose with no safe minimum. There is no dose low enough to be risk-free, so any nonzero exposure carries some risk. That means the model is applicable for any dose above zero millisieverts. In practical terms, this is why radiation protection uses LNT to estimate risk starting from zero and extending linearly upward.

The key idea here is that the linear non-threshold model says cancer risk rises in direct proportion to radiation dose with no safe minimum. There is no dose low enough to be risk-free, so any nonzero exposure carries some risk. That means the model is applicable for any dose above zero millisieverts. In practical terms, this is why radiation protection uses LNT to estimate risk starting from zero and extending linearly upward.