In a radioactive material, a fraction of active material remaining after the time t i s 9 16 . The fraction that was remaining after the time t 2 is :

Question

In a radioactive material, a fraction of active material remaining after the time t i s 9 16 . The fraction that was remaining after the time t 2 is :, 4 5, 3 5, 3 4, 7 8

MARKS App · Accepted Answer

N = N 0 e - λ t . . . 1 N ' = N 0 e - λ t 2 … . 2 from (1) & (2) N ' N 0 = N N 0 1 2 = 9 16 1 2 = 3 4 .

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