Questions
One gram of a radioactive sample of half-life 10min is sealed in a capsule at time
a
0.293 g
b
0.5 g
c
0.25 g
d
0.707 g
detailed solution
Correct option is A
Use the relation N=N0e−λt where the decay constant λ=(0.693/Thalf). The half life period Thalf is given to be 10 min, The amount N of radioactive out to be about 0.707g, so that the amount of sample decayed is (1−0.707)=0.293g.Talk to our academic expert!
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