Two redioactive nuclei A and B have disintegration constants lamda_(A)andlamda_(B) and initially N_(A)andN_(B) number of nuclei of them are taken, then the time after which their undisintegrated nuclei are same is

Two redioactive nuclei A and B have disintegration constants lamda_(A)

1.	Two redioactive nuclei A and B have disintegration constants lamda_(A)andlamda_(B) and initially N_(A)andN_(B) number of nuclei of them are taken, then the time after which their undisintegrated nuclei are same is
Answer» `(lambda_Alambda_B)/((lambda_A-lambda_B))"In"(N_B/N_A)` `(1)/((lambda_A+lambda_B))"In"(N_B/N_A)` `(1)/((lambda_B-lambda_A))"In"(N_B/N_A)` `(1)/((lambda_A-lambda_B))"In"(N_B/N_A)` SOLUTION :`N_A E^(-LAMBDA A^t)=N_B e^(-lambda B^t)` or `e(lambda_B-lambda_A)t=(N_B//N_A)` `THEREFORE t=1/((lambda_B-lambda_A))"In"(N_B/N_A)`

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Two redioactive nuclei A and B have disintegration constants lamda_(A)andlamda_(B) and initially N_(A)andN_(B) number of nuclei of them are taken, then the time after which their undisintegrated nuclei are same is

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