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The half life of radon is 3.8 days. After how long there will be only one twentieth of radon sample left over? |
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Answer» Solution :Data supplied, `N = (N_0)/(20), "" N/(N_0) = 1/(2^n) , "" T_(1//2) = 3.8` DAYS i.e, `1/20 = 1/(2^n) , "" 20 = 2^n` `log 20 = n log 2` `n = (log 20)/(log 2) = 4.322` `t_1 = nT_(1//2) = 3.8 xx 4.322= 16.42` days. |
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