Nuclei — Easy JEE physics MCQ
A radioactive sample has a half-life of $4$ days. The fraction remaining after $12$ days is:
- A. $1/8$
- B. $1/4$
- C. $1/16$
- D. $1/2$
Solution
Number of half-lives $= 12/4 = 3$
Fraction remaining $= (1/2)^3 = 1/8$
PHYSICS
easy • PYQ Reworded
Question
Read carefully, then pick the best option.
A radioactive sample has a half-life of days. The fraction remaining after days is:
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