Nuclei

A stable nuclei C is formed from two radioactive nuclei A and B with decay constant of lambda_1 and lambda_2 respectively. Initially, the number of nuclei of A is N_0 and that of B is zero. Nuclei B are produced at a constant rate of P. Find the number of the nuclei of C after time t.

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

Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes respectively, If initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be :

Radioactive nuclei are being generated at a constant rate by some kind of nuclear reaction. If the decay constant for the radioactive nuclei is lambda , which of the following graphical representation is correct ? (initially, there are no radioactive nuclei present )

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

At a given instant there are 25% undecayed radioactive nuclei in a sample. After 10 s the number of undecayed nuclei reduces to 12.5%. Calculate (a) mean life of the nuclei, (b) the time in which the number of undecayed nuclei will further reduce to 6.25% of the reduced number.