A radioactive isotope A with a half life of 1 25 x 10 year

Last updated: 6/10/2023

A radioactive isotope A with a half life of 1 25 x 10 year decays into B which is stable A sample of rock from a planet is found to contain both A and B present in the ratio 1 15 The age of the rock is O 4 x 107 year O 5 10 year O 5 x 10 0 year hr min 4 x 10 1 year