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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsRadioactivityEasy2 minPYQ_2011

PhysicsEasysingle choice

The half-life of a radioactive isotope $X$ is $50 yr$ . It decays to another element $Y$ which is stable. The two elements $X$ and $Y$ were found to be in the ratio of $1 : 15$ in a sample of a given rock. The age of the rock was estimated to beNEET 2011 (Screening)

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Answer:

Solution:

We know that $\frac{N}{N _{0}} \frac{1}{16} t t = (\frac{1}{2})^{t / t_{1} /2} = (\frac{1}{2})^{t /50} = 4 \times 50 = 200 yr$

Stream:NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: PYQ_2011

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