Two radioactive elements X and Y have half-life periods of and

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

Two radioactive elements X and Y have half-life periods of

50\,\text{min}

and

100\,\text{min}

, respectively. Initially, both contain equal numbers of atoms. Find the ratio

\frac{N_X}{N_Y}

after

200\,\text{min}