Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

A sample has N no. of nuclei in the beginning and has decay constant λ. It decays to number N' in 3 days. Which of the following is correct?

Options:

Half life is 3 days.

λ = 1/3

λ = 1/(3 x 24 x 3600)

None of these

Correct Answer:

None of these

Explanation:

There is nowhere written that N' is half of the sample initially.