Questions
Activity of radioactive element decreased to one third of original activity in 9 years. After further 9 years. its activity will be
detailed solution
Correct option is C
Activity R=R0e-λt R03=R0e-λ x 9⇒e-9λ=13 .......(i) After further 9 years R'=Re-λt=R03 x e-λ x 9 ......(ii) From equation (i) and (ii) R'=R09.Talk to our academic expert!
Similar Questions
The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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