Half life of a radioactive substance is 50s calculate decay constant and time taken for the sample to decay by 3/4 of the initial value
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A radioactive substance has a half life of four months. 3/4 of the substance will decay in?
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Avishek Das, lives in Dubai, United Arab Emirates
Answered Jan 29, 2016
Half life of any radioactive substance is the amount of time required for the quantity / weight of the substance to fall to half its initial value.
So after one half life , we will have ½ or 50% of the substance remaining. And after 2 half lives , we will have ¼ of the substance remaining. In other words, ¾ of the substance will take two half lives to decay.
As one half life is given as 4 months , so the substance will take 8 months to decay by ¾ th quantiy by weight.
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Avishek Das, lives in Dubai, United Arab Emirates
Answered Jan 29, 2016
Half life of any radioactive substance is the amount of time required for the quantity / weight of the substance to fall to half its initial value.
So after one half life , we will have ½ or 50% of the substance remaining. And after 2 half lives , we will have ¼ of the substance remaining. In other words, ¾ of the substance will take two half lives to decay.
As one half life is given as 4 months , so the substance will take 8 months to decay by ¾ th quantiy by weight.
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