A. 1
B. 2
C. 3
D. 4

Correct Answer: Option B

B. 2

Explanation

At the lowest point i.e at point 2

SEE ALSO  The half-life of a radioactive substance is 15 hours. If at some instance, the sample has a mass of 512 g, calculate the time it will take 78 of the sample to decay

Copyright warnings! Do not copy.