Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

It is observed that only 25% of a given radioactive sample is left undecayed after 16 days. What is the decay constant of the sample in $day^{-1}$?

Options:

0.25

0.087

8

1/8

Correct Answer:

0.087

Explanation:

The correct answer is Option (2) → 0.087