A sample contains two radioactive nuclei X and Y with half

Last updated: 6/9/2023

A sample contains two radioactive nuclei X and Y with half lives 2 hr and 1 hr respectively The nucleus X decays into the nucleus Y and Y decays into a stable nucleus Z At time t 0 the activities of the components in the same were equal Find the ratio of the number of active nuclei of Y at t 4h to the number at t 0