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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsRadioactivityMedium2 minQB

PhysicsMediumsingle choice

The half life of radioactive element X is $100 μ s$ . The time taken for the radioactivity of a sample of X to decay to $\frac{1}{16}$ th of its initial value is

Options:

Answer:

Solution:

$\frac{1}{16} = (\frac{1}{2})^{4} \Rightarrow t = 4 T_{1/2} = 400 μ s$

Hence option (A).

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: QB

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