Question

Activity of a radioactive sample decreases tp 1/3rd of its original value in 3 days . Then in 9 days its activity becomes _______.

Answer 1

Dear Student,

◆ Answer -

Activity of radioactive sample becomes 1/27th in 9 days.

● Explanation -

Sample will decrease to 1/3rd in first 3 days. It will become 1/9th in next 3 days and 1/27th of of its original value in next 3 days.

Therefore, activity of radioactive sample becomes 1/27th of original value in 9 days.

Thanks dear. Hope this helps you...