The ratio of activities of two ratio nuclides X and Y in a

Last updated: 6/30/2023

The ratio of activities of two ratio nuclides X and Y in a mixture at time t 0 was found to be 4 1 After two hours the ratio of activities become 1 1 If the t1 2 of ratio nuclide X is 20 min then t 2 in minutes of ratio nuclide Y is