First slide

Radio activity

Question

The graph between number of decayed atom $N^{1}$ of a radioactive element and time ‘t’ is

Moderate

A
B
C
D

Solution

$N = N_{o} e^{- λ t}$
No decayed = $N_{o} - N_{o} e^{- λ t}$
= $N_{o} (1 - e^{- λ t})$

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