The ratio of activities of two radionuclides and in a mixture at time is

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

Problem

The ratio of activities of two radionuclides

X

and

Y

in a mixture at time

t=0

4:1

. After two hours, the ratio of activities becomes

1:1

. If

t_{1/2}

of radionuclide

X

20\,\text{min}

, find

t_{1/2}

, in minutes, of radionuclide

Y