Questions
Plutonium decays with a half-life of 24,000 years. If plutonium is stored for 72,000 years, what fraction of it remains ?
a
18
b
38
c
78
d
14
detailed solution
Correct option is A
No. of half-lives ‘n’ =72,00024,000=3 Remaining fraction NN0=(12)n=(12)3=18Talk to our academic expert!
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