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  1. Tardigrade
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  3. Physics
  4. The half life of a radioactive substance is T 0. At t=0, the number of active nuclei are N0. Select the correct alternative.

Q. The half life of a radioactive substance is . At , the number of active nuclei are . Select the correct alternative.

Nuclei Report Error

Solution:

Using radioactive decay equation we have
At number of nuclei are and at time number of nuclei left are
Thus number of nuclei decayed in time are
Probability that a radioactive nuclei does not decay in to

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