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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsRadioactivityMedium2 minQB

PhysicsMediumsingle choice

The half-life of the radioactive Radon is 3.8 days. The time, at the end of which 1/20th of the Radon sample will remain undecayed, is (given $lo g_{10} e = 0.4343$ )

Options:

Answer:

Solution:

$\frac{1}{20} = 2^{- t / T} \Rightarrow t = T lo g_{2} 20 = 3.8 \times 4.32 \approx 16.5 days$

Hence option (B).

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: QB

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