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The half life of a radioactive material is 12.7 hours.What fraction of the original material would become inactive in 63.5 hours?

The half life of a radioactive material is 12.7 hours.What fraction of the original material would become inactive in 63.5 hours?

Grade:12

1 Answers

Himanshu
389 Points
5 years ago
half life of the reactions is 12.7 hours.
given time:63.5 hours
no of half lives: 63.5/12.7=5
after n halves life amount left is (1/2)^n
hence in given question amount left agter 63.5 hours is (1/2)^5:1/32
 

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