Nuclei X and Y convert into a stable nucleus Z. At t=0 , the number of nuclei of X is 8 times that of Y. Half life of X is 1 hour and half life of y=2 hour. Find the time (in hour) at which rate of disintegration of X and Y are equal.

Nuceli A and B convert into a stable nucleus C . Nucleus A is converted into C by emitting 2 alpha particels and 3 beta -particles. Nucleus B is converted into C by emitting one alpha -particle and 5 beta -particles. At time t=0 , nuclei of A are 4N_(0) and nuceli of B are N_(0) . Initially, number of nuclei of C are zero. Half-life of A (into conservation of C ) is 1 min and that of B is 2 min . Find the time (in minutes) at which rate of disintegration of A and B are equal.

Nuceli A and B convert into a stable nucleus C . Nucleus A is converted into C by emitting 2 alpha particels and 3 beta -particles. Nucleus B is converted into C by emitting one alpha -particle and 5 beta -particles. At time t=0 , nuclei of A are 4N_(0) and nuceli of B are N_(0) . Initially, number of nuclei of C are zero. Half-life of A (into conservation of C ) is 1 min and that of B is 2 min . Find the time (in minutes) at which rate of disintegration of A and B are equal.

Two radioactive substance X and Y initially contain equal number of nuclei. X has a half life of 1 hour and X has a half-life of 2 hours. After the ratio of activity of X to that of y is

Two radioactive substance X and Y initially contain equal number of nuclei. X has a half life of 1 hour and Y has a half-life of 2 hours. After 2 hours the ratio of activity of X to that of y is

Radioactive nuclei P and Q disintegrate into R with half lives 1 month and 2 months respectively. At time t=0 , number of nuclei of each P and Q is x. Time at which rate of disintegration of P and Q are equal , number of nuclei of R is

Radioactive nuclei P and Q disintegrate into R with half lives 1 month and 2 months respectively. At time t=0 , number of nuclei of each P and Q is x. Time at which rate of disintegration of P and Q are equal , number of nuclei of R is