If a radioactive substance to 1/16 of its original mass in 40 days, what is its half life
A. 10 days
B. 20 days
C. 40 days
D. None of these
Answer:A
If a radioactive substance to 1/16 of its original mass in 40 days, what is its half life
A. 10 days B. 20 days C. 40 days D. None of these