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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsRadioactivityEasy2 minPYQ_2020

PhysicsEasysingle choice

If the half-life of a radioactive element is $10$ hours, its average life is

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Answer:

Solution:

$λ t_{\frac{1}{2}} = \ln 2 = 0.693$

$\Rightarrow t_{a v g} = \frac{1}{λ} = \frac{t_{\frac{1}{2}}}{l n 2} = \frac{10}{0.693}$

$\Rightarrow t_{a v g} = 14.4$ hours

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Radioactivity

⏱ 2mℹ️ Source: PYQ_2020

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