A) 1600 years
B) 3200 years
C) 800 years
D) none of these
Correct Answer: A
Solution :
As the half-life period of radium is 1600 years, hence the time taken for the sample to remain 10 g from initial amount of 20 g is 1600 years. (Half-life is a characteristic of radioactive substance and is independent of initial amount)You need to login to perform this action.
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