1. Tardigrade
  2. Question
  3. Physics
  4. The half-life o f 131I is 8 days. Given a sample o f 131I at time t=0, we can assert tha

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The half-life o f $^{131}I$ is 8 days. Given a sample o f $^{131}I$ at time t=0, we can assert tha

IIT JEEIIT JEE 1998

Solution:

Number of nuclei decreases exponentially
$N=N_0e^{-\lambda t}$
Therefore, decay process lasts upto $t=\propto$. Therefore, a given nucleus may decay at any time after t = 0.