1 g sample of has 27% purity and emits -particles with half-life year

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

Problem

1 g sample of

^{152}\text{Sm}

has 27% purity and emits

\alpha

-particles with half-life

10^{12}

year. Calculate the number of

\alpha

-particles approximately emitted in 1 sec: (1) 24 (2) 48 (3) 16 (4) 32