ARRT Level 1 Module 1 JKO Questions and
Answers 100% Correct
What is the term used to describe the time required for the activity present in a radioactive
material to be reduced to one half of the original activity? Correct Answ_Half Life
What unit is radioactivity NOT measured in? Correct Answ_Count Rate
Is an isotope has an atomic number of 92 and a mass number of 196, what is the number of
neutrons? Correct Answ_104
What is the term used to describe the actual mass of an atom? Correct Answ_Atomic Weight
How much radioactivity is left?
Initial Activity- 6 Ci of Sr-90
Time Elapsed- 16 years, 3 months
Half Life- 28.8 years Correct Answ_4.06 Curies
How much radioactivity is left?
Answers 100% Correct
What is the term used to describe the time required for the activity present in a radioactive
material to be reduced to one half of the original activity? Correct Answ_Half Life
What unit is radioactivity NOT measured in? Correct Answ_Count Rate
Is an isotope has an atomic number of 92 and a mass number of 196, what is the number of
neutrons? Correct Answ_104
What is the term used to describe the actual mass of an atom? Correct Answ_Atomic Weight
How much radioactivity is left?
Initial Activity- 6 Ci of Sr-90
Time Elapsed- 16 years, 3 months
Half Life- 28.8 years Correct Answ_4.06 Curies
How much radioactivity is left?
