Question
Physics Question on deccay rate
If 10% of a radioactive material decays in 10 days the percentage of the material that decays in 20 days is
A
0.2
B
0.41
C
0.81
D
0.19
Answer
0.19
Explanation
Solution
Answer (d) 19%
If 10% of a radioactive material decays in 10 days the percentage of the material that decays in 20 days is
0.2
0.41
0.81
0.19
0.19
Answer (d) 19%