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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsRadioactivityMedium2 minPYQ_2012

PhysicsMediumsingle choice

A radioactive substance contains 10000 nucle $i$ and itshalf-life period is 20 days. The number of nuclei present at the end of 10 days is

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Solution:

We know, $\frac{N}{N _{0}} = (\frac{1}{2})^{t / T} \Rightarrow \frac{N}{10000} = (\frac{1}{2})^{\frac{10}{20}} \Rightarrow N = \frac{10000}{2} = \frac{10000}{1.414} = 7070$

Stream:VITEEESubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: PYQ_2012

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