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Half life of radioactive element is 5 minutes at the end of 20 minutes its ___________ % quantity is disintegrated

Rimmi Kaur , 7 Years ago
Grade 12th pass
anser 1 Answers
Bhavya

Last Activity: 7 Years ago

Dear student
in 5 minutes a quantity becomes ½ of its original value.Since 20 minutes = 4 half lives thus the quantity of substance would remain as (1/2)^4 = 1/16

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