Two radioactive materials `X_(1)` and `X_(2)` have decay constant `11 lambda` and `lambda` respectively. If initially they have same number of nuclei, then ratio of number of nuclei of `X_(1)` to `X_(2)` will be `(1)/(e^(2))` after a time

Two radioactive materials X_(1) and X_(2) have decay constants 5 lambda and lambda respectively. If initially they have the same number of nuclei, then the ratio of the number of muclei of X_(1) to that of X_(2) will be 1/e after a time

Two radioactive materials X_(1) and X_(2) have decay constants 10 lamda and lamda respectively. If initially they have the same number of nuclei, if the ratio of the number of nuclei of X_(1) to that of X_(2) will be 1//e after a time n/(9lamda) . Find the value of n ?

Two redioactive materials X_(1)andX_(2) have decay constants 10lamdaandlamda , respecitvely. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X_(1) to that of X_(2) will be 1/e after a time

Two radioactive materials X_1 and X_2 have decay constants 10 lamda and lamda respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X_1 to that of X_2 will be 1//e after a time.

Two radioactive X_(1) and X_(2) have docay constants 10 lambda and lambda respecttively . If inittially they have the same number of noclei, then the radio of the number of nuclei of X_(1) to that of X_(2) will be 1//e after a time .

Two radioactive materials X_(1) and X_(2) have decay constants 10 lambda and lambda respectively. If initially they have the same numbers of nucle, then the ratio fo the nclie of X_(1) to that X_(2) will be 1//e after a time:

Two radioactive material A and B have disintegration constants 10lambda and2lambda respectively. If initially they have same number of nuclei, then the ration of number of nuclei of A and B will be (1)/(e) after a time of :