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Is it correct to define mean life(average life) the time at which no of particles will reduce to 1/e of their initial values No/e = No e^(-lambda*t) -1= - lambda *t t(mean) = 1/ lambda or the sum of life of all the particles present divided by total no of particles derivation using intergration.. which is the correct answer?(cbse 2010)

Is it correct to define mean life(average life) the time at which no of particles will reduce to 1/e of their initial values
No/e = No e^(-lambda*t)
-1= - lambda *t
t(mean) = 1/ lambda

or the sum of life of all the particles present divided by total no of particles
derivation using intergration..

which is the correct answer?(cbse 2010)

Grade:10

1 Answers

Ashish ram
31 Points
12 years ago

no we cant define mean life in such a wa.The definition that You gave is the definition of Decay constant. If u find my answer useful the please approve the answer.

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