The fraction f of radioactive material that has decayed in time t, varies with time t. The correct variation is given by the curve
Text Solution
Verified by ExpertsThe correct answer is:
B
Number of atoms undecayed 
Number of atoms decayed 
⇒ ⇒ Decayed fraction 
i.e. fraction will rise up to 1, following exponential path as shown in graph .
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