A nuclide has a decay constant

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

Problem

1.6\times10^{-4}\,\text{s}^{-1}

. Calculate, in minutes, the time required for the number of undecayed nuclei to drop to

1\%

of the initial number. (a)

5.1\times10^{2}\,\text{min}

(b)

2.1\times10^{2}\,\text{min}

(c)

4.8\times10^{2}\,\text{min}

(d)

4.2\times10^{2}\,\text{min}