Questions
A radioactive sample has half-life of 3yr’s. Probability of decay in 9yr’s.will be
a
75%
b
87.5%
c
85%
d
60%
detailed solution
Correct option is B
Number of half-lifes n=93 =3 Now, Fraction remaining=NN0=12n=123=18 Probability of decay = Fraction decayed = 1−NN0=1−18=78 In percentage=78×100=87.5%Talk to our academic expert!
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