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Grade 12th passModern Physics

The half life of radon is3.8 days .after how many days will (1/10)th of radon sample remain behinde

varadha krishna

8 Years agoGrade 12th pass

1 Answer

Khimraj

8 Years ago

ln2/ $\lambda$ = 3.8 days

N = N_o e^-t

N = 0.1N_o = N_oe^-t

1/10 = e^-t

e^t = 10

$\lambda$ t = ln10

t = ln10/ $\lambda$ = (ln10/ln2)*3.8 days.

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