Скачать или смотреть P decays to Q and Q decays to R (non-radioactive)...Which graph is correct | JEE PHYSICS

P decays to Q and Q decays to R (non-radioactive)...Which graph is correct | JEE PHYSICS


In this problem, nucleus P undergoes radioactive decay to form Q, and then Q further decays into stable R. To identify the correct graph, remember:

The number of P nuclei decreases exponentially with time.

The number of Q nuclei first increases (as it is produced from P), reaches a maximum, and then decreases (as it itself decays).

The number of stable R nuclei increases continuously and saturates.


This concept is frequently asked in JEE Mains & Advanced under Radioactivity & Nuclear Physics. Understanding the time-dependent behavior of parent, daughter, and stable nuclei is key to solving such questions quickly.


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