okay a lot of people are asking about the half life question of - TopicsExpress

okay a lot of people are asking about the half life question of mcat 2011.. the statement was : The half life of a certain element is 1500 years, after 6000 years what will be the fraction left.. see in 6000 years there are actually (6000/1500 = 4) four half lives after 1st half life amount left = 1/2 after 2nd half life amount left = 1/4 after 3rd half life amount left = 1/8 after 4th half life amount left = 1/16 so after 4 half lives 1/16 of the total amount will be left ( P.S total amount decayed after 4 half lives = 1 - 1/16 = 15/16 )

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