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PhysicsModern PhysicsRadioactivityMedium2 minQB

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The halflife Po-218 is 3 minutes. What fraction of a 10 gram sample of Po-218 will remain after 15 min?

Answer:

Solution:

15 min = 5 half-lives:

$\frac{N}{N _{0}} = (\frac{1}{2})^{5} = \frac{1}{32}$

Hence option (A).

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: QB

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