A nuclide X (half-life ) decays to a radioactive nuclide Y (half-life ) which then…

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A nuclide X (half-life

50\,\text{d}

) decays to a radioactive nuclide Y (half-life

5\,\text{d}

) which then decays to a stable product. The initial activity of a pure X sample is

1.0\,\text{MBq}

. Determine the activity of Y after

25\,\text{d}

. (a)

1.5\,\text{MBq}

(b)

0.75\,\text{MBq}

(c)

0.10\,\text{MBq}

(d)

0.30\,\text{MBq}